{"title":"Supertech","description":"\u003cdiv class=\"ellipsis\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eSupertech\u003c\/h2\u003e\n\u003cp\u003eSupertech parts are truly the best on the market, made from high-quality stainless steel for maximum strength and durability. Supertech’s engineers have top-notch technical expertise who design performance valves, pistons, and valvetrain components for the automotive and racing industry.\u003c\/p\u003e\n\u003cp\u003eFor the best selection of Aftermarket Supertech Parts like high performance engine valves, Supertech heating parts, and automotive engine valves, there's no better place to buy than at MAPerformance. We carry the highest-quality selection of racing valves on the internet. Shop from the best aftermarket wide range of quality control instrumentation, cooling system cleaner, and flush coolant products at the lowest price on the web, guaranteed thanks to the MAPerformance Price Match Guarantee.\u003c\/p\u003e\n\u003cp\u003eWhen it comes to aftermarket auto parts, quality matters. That's why we sell Supertech performance parts that enhance both cosmetic and performance aspects of your car.\u003c\/p\u003e\n\u003cp\u003eBuying custom valves and inventory like Supertech K Series products from MAPerformance, you'll get great perks like fast, free shipping on orders over $199, and a hassle-free 90-day return policy. We care about your ongoing projects part-buying experience as much as you care about your ride.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"supertech-standard-size-black-nitride-intake-and-exhaust-valve-set-dsm-evo","title":"Supertech Standard Size Black Nitride Intake \u0026 Exhaust Valve Set | 1G \/ 2G DSM \u0026 Evo 8\/9 (MIVN-1007 + MEVN-1007)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eSupertech Black Nitride Compete Valve Set for Mitsubishi 4G63\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThe black nitride coating is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandard size\u003c\/li\u003e\n\u003cli\u003eBlack Nitride treatment increases hardness\u003c\/li\u003e\n\u003cli\u003eWithstands non-standard fuel better than stainless steel alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1990-1999 1G \/ 2G DSM\u003c\/li\u003e\n\u003cli\u003e2003-2006 Mitsubishi Evo 8\/9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(8) Intake Valves\u003c\/li\u003e\n\u003cli\u003e(8) Exhaust Valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.supertechperformance.com\/warranty\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNo Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298345027,"sku":"SUP MIVN-1007 + MEVN-1007","price":373.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-mivn-1007-mevn-1007-28302940274758.jpg?v=1735717120"},{"product_id":"supertech-single-valve-spring-and-retainer-kit-honda-k20a3-k24a3","title":"Supertech Single Valve Spring and Retainer Kit (Honda K20A3 \/ K24A3)","description":"\u003cp\u003eValve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control. \u003c\/p\u003e\u003ceol\u003e\u003cp\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298345731,"sku":"SUP SPRK-M1007S-K2","price":447.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-sprk-m1007s-k2-3745125059.jpg?v=1744823798"},{"product_id":"supertech-single-valve-spring-and-retainer-kit-dsm-evo-4g63","title":"Supertech Single Valve Spring and Retainer Kit (DSM \/ Evo 4G63)","description":"\u003cp\u003eValve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control. \u003c\/p\u003e\u003ceol\u003e\u003ceol\u003e\u003cb\u003eSingle Valve Spring Specs:\u003c\/b\u003e\u003ceol\u003e\u003cul\u003e\u003ceol\u003e\u003cli\u003e- Outer Spring O.D.: 28.10mm\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Outer Spring I.D.:  20.00mm\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Seat Pressure: 76 @ 39.6\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Open (lift) Pressure: 200 @ 11.5\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Max Lift: 14.90mm\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Coil Bind: 24.70mm\u003c\/li\u003e\n\u003ceol\u003e\u003cli\u003e- Rate: 10.50 lbs\/mm\u003c\/li\u003e\n\u003ceol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/ul\u003e\n\u003ceol\u003e\u003ceol\u003e\u003cp\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298347203,"sku":"SUP SPRK-M1007S","price":447.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-sprk-m1007s-3745125571.jpg?v=1735717119"},{"product_id":"supertech-single-spring-retainer-kit-honda-acura-sprk-h1003s","title":"Supertech Single Spring \/ Retainer Kit | D16A6 \/D15B (SPRK-H1003S)","description":"\u003cp\u003eSupertech Spring \/ Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring \/ Retainer kits are second to none in terms of performance, quality and value.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298348163,"sku":"SUP SPRK-H1003S","price":505.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-sprk-h1003s-3745125763.jpg?v=1744823796"},{"product_id":"supertech-intake-valve-guides-subaru-ej20-ej25","title":"Supertech Intake Valve Guide | Subaru EJ20\/EJ25 (GDE-SUEJ6-I)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eIntake Valve Guide for Subaru EJ20 \/ EJ25\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eOur valve guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low Friction black nitrided valves provides the best solution for performance and durability.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003e\u003cstrong\u003ePlease Note: Sold individually.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEJ20\/25 6mm stem Manganese Bronze. OD 11.08mm(std) \/L: 39.5m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2014 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004-2021 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Intake Valve Guide\u003cbr\u003e\u003cem\u003ePurchase 8 for a full set\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ceol\u003e \u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298350723,"sku":"SUP GDE-SUEJ6-I","price":8.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-gde-suej6-i-12036651057222.png?v=1735717117"},{"product_id":"supertech-intake-valve-guides-honda-b-h-series","title":"Supertech Intake Valve Guides (Honda B\/H Series)","description":"\u003cp\u003eOur valve guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low Friction black nitrided valves provides the best solution for performance and durability.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eSold individually\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298352707,"sku":"SUP GDE-HB55-I","price":6.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-gde-hb55-i-3745126851.jpg?v=1744823795"},{"product_id":"supertech-exhaust-valve-guides-subaru-ej20-ej25","title":"Supertech Exhaust Valve Guide | Subaru EJ20\/EJ25 (GDE-SUEJ6-E)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eSet of 8 Exhaust Valve Guide for Subaru EJ20 \/ EJ25\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eOur valve guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low Friction black nitrided valves provides the best solution for performance and durability.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e6mm stem Manganese Bronze. OD 11.08mm(std)\/L: 47.50mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2014 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004-2021 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Exhaust Valve Guide\u003cbr\u003e\u003cem\u003ePurchase 8 for a full set\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ceol\u003e \u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298353283,"sku":"SUP GDE-SUEJ6-E","price":8.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-gde-suej6-e-12041236152390.png?v=1735717115"},{"product_id":"supertech-exhaust-valve-guides-honda-s2000","title":"Supertech Exhaust Valve Guides | 2000-2009 Honda S2000 (GDE-HS255-E)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eSupertech Exhaust Valve Guides\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eOur Valve Guides are precision-machined from high quality Manganese Bronze material. Supertech Valve Guides are designed to be used in combination with our low friction black nitrided valves to provide the best solution for both performance and durability. For exhaust valve guides designed to be used for high powered engines that need a better thermal transfer coefficient, we use a copper alloy guide. Copper has about a 3 times higher thermal transfer than Manganese Bronze.  Regardless of your needs Supertech has the right valve guide for your application.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrecision-machined from high quality Manganese Bronze material\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned to be used in combination with our low friction black nitrided valves\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2000-2009 Honda S2000\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(8) Exhaust Valve Guides\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298354435,"sku":"SUP GDE-HS255-E","price":8.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-gde-hs255-e-11984101441606.png?v=1735717114"},{"product_id":"supertech-exhaust-valve-guides-honda-d-k-series","title":"Supertech Exhaust Valve Guides (Honda D\/K Series)","description":"\u003cp\u003eOur valve guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low Friction black nitrided valves provides the best solution for performance and durability.\u003c\/p\u003e\u003ceol\u003e\u003cp\u003e\u003cstrong\u003eInclude a set of 8 valve guides.\u003c\/strong\u003e\u003c\/p\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298355267,"sku":"SUP GDE-HD55-E","price":6.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-gde-hd55-e-3745127555.jpg?v=1744823794"},{"product_id":"supertech-exhaust-valve-guides-honda-b-h-series","title":"Supertech Exhaust Valve Guides (Honda B\/H Series)","description":"\u003cp\u003eOur valve guides are precision-machined from high quality Manganese Bronze material. 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Computer software also allows us to make sure that the harmonics are well under control. \u003c\/p\u003e\u003ceol\u003e\u003cp\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298359427,"sku":"SUP SPRK-M1007D-K2","price":629.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-sprk-m1007d-k2-3745130115.jpg?v=1744823792"},{"product_id":"supertech-single-valve-spring-retainer-kit-multiple-fitments-sprk-h1002s","title":"Supertech Single Valve Spring \u0026 Retainer Kit | D17A \/ D15B \/ D16Z6 \/ D16Y8 \/ D16Y7 \/ D16Y6 (SPRK-H1002S","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eSingle Valve Spring \u0026amp; Retainer Kit by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eValve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Single Spring\u003c\/li\u003e\n\u003cli\u003ePress.Seat: 60 @49.50mm\u003c\/li\u003e\n\u003cli\u003eMax Lift: 14.90mm\u003c\/li\u003e\n\u003cli\u003eCoil Bind: 34.60mm\u003c\/li\u003e\n\u003cli\u003eRate: 8.50 lbs\/mm\u003c\/li\u003e\n\u003cli\u003eRetainer: RET-H1002\/T1\u003c\/li\u003e\n\u003cli\u003eSpring : SPR-H1002S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda D15B2\/6\/7\/8\u003c\/li\u003e\n\u003cli\u003eHonda D16Y7\/8\u003c\/li\u003e\n\u003cli\u003eHonda D16Z6\u003c\/li\u003e\n\u003cli\u003eHonda D17A1\/2\/6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 - Single Valve Spring Kit\u003c\/li\u003e\n\u003cli\u003e1 - Retainer Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298360131,"sku":"SUP SPRK-H1002S","price":447.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-sprk-h1002s-11959543660614.png?v=1744823790"},{"product_id":"supertech-complete-valve-seal-kit-subaru-ej20-ej25-wrx-sti-turbo","title":"Supertech Complete Valve Seal Kit | Subaru EJ20\/EJ25 Engines (VS-TS6I\/VS-TS6E)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003e6mm Intake\/Exhaust Valve Stem Seals Kit by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eSupertech Valve Seals are made of rubber compound material for intake application and Special Hi Temp compound for the exhaust application.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh durability rubber compound ensure long life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSubaru EJ20\/EJ25 Engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8 - Exhaust Valve Seals\u003c\/li\u003e\n\u003cli\u003e8 - Intake Valve Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298360835,"sku":"SUP VS-TS6E + SUP VS-TS6I*8Pack","price":15.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-vs-ts6e-sup-vs-ts6i-8pack-11999692095558.jpg?v=1735717109"},{"product_id":"supertech-chrome-exhaust-valves-honda-b16a-b18c","title":"Supertech Chrome Exhaust Valves (Honda B16A \/ B18C)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in  the manufacturing of racing valves, do intensive testing and work very  closely with many engine builders in order to continuously improve and  provide the market with the best possible product for every  application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eStainless Steel Alloys\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eMade as a one piece forged valve for higher strength and reliability. We use mostly EV8 (21-4N) for intake and exhaust valves but there are other alloys that we use along with different heat treatments to manufacture valve for different applications. Other hard metal alloys may be welded to harden certain areas like the tips or seats. We use mainly two different types of coatings:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChrome Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWidely used in high performance valves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298361347,"sku":"SUP HEVN-200F-8","price":119.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-hevn-200f-8-3745131587.jpg?v=1744823789"},{"product_id":"supertech-black-nitride-intake-valves-honda-d16z6","title":"Supertech Black Nitride Intake Valves (Honda D16Z6)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in  the manufacturing of racing valves, do intensive testing and work very  closely with many engine builders in order to continuously improve and  provide the market with the best possible product for every  application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp\u003e Higher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298362819,"sku":"SUP HIVN-1002-8","price":182.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-hivn-1002-8-11982975369286.jpg?v=1744823788"},{"product_id":"supertech-black-nitride-intake-valves-honda-d16a6-d15b","title":"Supertech Black Nitride Intake Valves (Honda D16A6 \/ D15B)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in  the manufacturing of racing valves, do intensive testing and work very  closely with many engine builders in order to continuously improve and  provide the market with the best possible product for every  application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp\u003e Higher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298363203,"sku":"SUP HIVN-1003-8","price":190.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-hivn-1003-8-3745132419.jpg?v=1744823787"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-d16z6-1mm-oversize","title":"Supertech Black Nitride Exhaust Valves (Honda D16Z6) +1mm Oversize","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in  the manufacturing of racing valves, do intensive testing and work very  closely with many engine builders in order to continuously improve and  provide the market with the best possible product for every  application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp\u003e Higher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298364035,"sku":"SUP HEVI-1102-8","price":306.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-hevi-1102-8-22661263747.jpg?v=1744823786"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-d16a6-d15b","title":"Supertech Black Nitride Exhaust Valves (Honda D16A6 \/ D15B)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in  the manufacturing of racing valves, do intensive testing and work very  closely with many engine builders in order to continuously improve and  provide the market with the best possible product for every  application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp\u003e Higher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":5298365379,"sku":"SUP HEVN-1003-8","price":190.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-hevn-1003-8-22661258179.jpg?v=1744823785"},{"product_id":"2007-2015-evo-x-dual-valve-spring-and-retainer-kit-by-supertech-spr-m1012-ex1","title":"2007-2015 Evo X Dual Valve Spring and Retainer Kit by Supertech (SPR-M1012\/EX1)","description":"\u003ch2\u003eEvo X Dual Valve Spring and Retainer Kit\u003c\/h2\u003e\n\u003ceol\u003e\n\u003cp\u003eValve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch4\u003eSPR-M1012\/EX1\u003c\/h4\u003e\n\u003ceol\u003e\n\u003cul\u003e\u003ceol\u003e\n\u003cli\u003eOuter Spring - O.D. 27.50 mm I.D. 20.00 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eInner Spring - O.D. 20.00 mm I.D. 15.20 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003ePressure - Seat 75lbs @ 34.50 mm Open(lift) 185lbs @11.5 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eMax Net Lift - 14.50 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eCoil Bind - 20.00 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eRate - 9.60 lbs\/mm\u003c\/li\u003e\n\u003ceol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/ul\u003e\n\u003ceol\u003e\n\u003ch4\u003eSPR-M1015\/EX2\u003c\/h4\u003e\n\u003ceol\u003e\n\u003cul\u003e\u003ceol\u003e\n\u003cli\u003eOuter Spring - O.D. 27.50 mm I.D. 20.00 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eInner Spring - O.D. 20.00 mm I.D. 15.20 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003ePressure - Seat 75lbs @ 35.30 mm Open(lift) 215lbs @11.5 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eMax Net Lift - 14.50 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eCoil Bind - 20.70 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eRate - 12.10 lbs\/mm\u003c\/li\u003e\n\u003ceol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/ul\u003e\n\u003ceol\u003e\n\u003ch4\u003eSPR-M1015\/EX3\u003c\/h4\u003e\n\u003ceol\u003e\n\u003cul\u003e\u003ceol\u003e\n\u003cli\u003eOuter Spring - O.D. 27.50 mm I.D. 20.00 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eInner Spring - O.D. 20.00 mm I.D. 15.20 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003ePressure - Seat 85lbs @ 34.50 mm Open(lift) 228lbs @11.5 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eMax Net Lift - 13.80 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eCoil Bind - 20.70 mm\u003c\/li\u003e\n\u003ceol\u003e\n\u003cli\u003eRate - 12.10 lbs\/mm\u003c\/li\u003e\n\u003ceol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/ul\u003e\n\u003ceol\u003e \u003ceol\u003e \u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Note:\u003c\/strong\u003e It has been reported that the increased open pressures of the M1015 springs may cause issues in regards to MIVEC control that cannot be alleviated by tuning alone. We recommend using the M1012 springs in daily driven applications and the M1015 springs in race applications utilizing heavier weight oils only. Please feel free to contact us with any additional questions or concerns.\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"185@11.5","offer_id":7525828803,"sku":"SUP SPRK-M1012-EX1","price":629.53,"currency_code":"USD","in_stock":true},{"title":"215@11.5","offer_id":9002560131,"sku":"SUP SPRK-M1015-EX2","price":629.53,"currency_code":"USD","in_stock":true},{"title":"228@11.5","offer_id":9002560195,"sku":"SUP SPRK-M1015-EX3","price":629.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11981344309318.jpg?v=1735717104"},{"product_id":"dsm-and-evo-8-9-valve-seals-supertech-4g63-complete-valve-seal-kit","title":"Supertech 4G63 Complete Valve Seal Kit | DSM \/ EVO 4G63T (VS-M6.6E + VS-M6.6I)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003e6.6mm Intake Valve Stem Seals by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003e6.6mm Intake and Exhaust Valve Stem Seals. Fits all 4G63T engines.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6.6mm Intake and Exhaust Valve Stem Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1989-1999 1G \/ 2G DSM 4G63T\u003c\/li\u003e\n\u003cli\u003e1992-2006 Evo 1-9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(8) Intake Valve Stem Seals\u003c\/li\u003e\n\u003cli\u003e(8) Exhaust Valve Stem Seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard","offer_id":7525831043,"sku":"SUP VS-M6.6Ex8 + VS-M6.6Ix8","price":16.29,"currency_code":"USD","in_stock":true},{"title":"Reduced O.D.","offer_id":9003432643,"sku":"SUP VS-H6.6Ex8 + VS-H6.6Ix8","price":16.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11986971131974.jpg?v=1735717103"},{"product_id":"supertech-beehive-valve-spring-and-retainer-kit-dsm-evo-4g63-m1007be","title":"Supertech Beehive Valve Spring and Retainer Kit | DSM \/ Evo 4G63 (SPRK-M1007BE)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eSupertech Beehive Valve Spring Kit with Titanium Retainers\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eAll Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of our springs.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eOur valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. We also utilize computer software that allows us to ensure that the harmonics are under control. This combined with our high quality steel alloy enables Supertech valve springs to be more durable in extreme conditions, giving your performance racing engine a serious competitive advantage in both performance and durability.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eSupertech retainers are manufactured with high quality military certified Titanium alloy, and are CNC machined for a tight fit. Our high quality retainers are among the best in the industry.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Beehive Spring\u003c\/li\u003e\n\u003cli\u003eCoil Bind: 22.80mm\u003c\/li\u003e\n\u003cli\u003eRate: 12.80 lbs\/mm\u003c\/li\u003e\n\u003cli\u003eRetainer: RET-M65-TBE\u003c\/li\u003e\n\u003cli\u003eSpring : SPR-M1007BE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e80lb Spring Rate: Max Lift 15.30mm\u003c\/li\u003e\n\u003cli\u003e98lb Spring Rate: Max Lift 14.00mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1990-1999 1G\/2G DSM 4G63\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2001-2006 Mitsubishi Evo 7\/8\/9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(16) Valve Springs\u003c\/li\u003e\n\u003cli\u003e(16) Retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"80lb","offer_id":7525831939,"sku":"SUP SPRK-M1007BE-1","price":617.77,"currency_code":"USD","in_stock":true},{"title":"98lb","offer_id":8964644355,"sku":"SUP SPRK-M1007BE-2","price":617.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-13069508837446.png?v=1735717103"},{"product_id":"supertech-beehive-valve-spring-and-retainer-kit-s2000-f20","title":"Supertech Beehive Valve Spring and Retainer Kit (S2000 \/ F20)","description":"\u003cp\u003eValve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance \u0026amp; durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.\u003c\/p\u003e\n\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"75lb","offer_id":7525832707,"sku":"SUP SPRK-H1007BE-1","price":617.77,"currency_code":"USD","in_stock":true},{"title":"90lb","offer_id":8964452803,"sku":"SUP SPRK-H1007BE-2","price":617.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-5287192963.jpg?v=1735717102"},{"product_id":"supertech-black-nitride-exhaust-valves-dsm-evo","title":"Supertech Black Nitride Exhaust Valves | Multiple Evo\/DSM Fitments (MEVN-100x)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003cp align=\"justify\"\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eBlack Nitride Coating is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlack Nitride Coating.\u003c\/li\u003e\n\u003cli\u003eAll valves are swirl polished, have stem undercut and a hardened tip.\u003c\/li\u003e\n\u003cli\u003eMatches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSurface Finish is smoother than with chromed stems, having less friction between stem and guide.\u003c\/li\u003e\n\u003cli\u003eLasts longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes.\u003c\/li\u003e\n\u003cli\u003eBlack nitride layer reduces this power loss due to less valve-guide friction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2003-2006 Mitsubishi Lancer Evo 8 \/ 9\u003c\/li\u003e\n\u003cli\u003e1990-1999 Mitsubishi Eclipse\u003c\/li\u003e\n\u003cli\u003e1990-1998 Eagle Talon\u003c\/li\u003e\n\u003cli\u003e1990-1992 Plymouth Laser\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 - Black Nitride Exhaust Valve (Single or Set of 8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard \/ Single (1)","offer_id":7525833475,"sku":"SUP MEVN-1007","price":22.82,"currency_code":"USD","in_stock":true},{"title":"Standard \/ Full Set (8)","offer_id":30253329875014,"sku":"SUP MEVN-1007-8","price":182.62,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize \/ Single (1)","offer_id":8961530371,"sku":"SUP MEVN-1008","price":23.34,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize \/ Full Set (8)","offer_id":30253329907782,"sku":"SUP MEVN-1008-8","price":186.64,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Single (1)","offer_id":8961530499,"sku":"SUP MEVN-1009","price":22.82,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Full Set (8)","offer_id":30253329940550,"sku":"SUP MEVN-1009-8","price":182.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-sup-mevn-1007-standard-single-1-11984002940998.jpg?v=1737127662"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-b16a-b18c","title":"Supertech Black Nitride Exhaust Valves (Honda B16A \/ B18C)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Standard (Flat Top)","offer_id":8962478339,"sku":"SUP HEVN-100F-8","price":180.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-5287194499.jpg?v=1744823365"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-b18a-b18b","title":"Supertech Black Nitride Exhaust Valves | Multiple Acura\/Honda Fitments (HEVN-1004)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eMultiple Acura\/Honda Fitments Black Nitride Exhaust Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eBlack Nitrided Exhaust Valve by Supertech. Designed utilizing the latest technology, this product by Supertech features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 8\u003c\/li\u003e\n\u003cli\u003eExpected to provide worry-free service for years\u003c\/li\u003e\n\u003cli\u003eHead Diam: 28.00mm (std) Dish\u003c\/li\u003e\n\u003cli\u003eStem Diam: 6.55mm\u003c\/li\u003e\n\u003cli\u003eLength: 105.80mm\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Nitrided\u003c\/li\u003e\n\u003cli\u003eValve Type: Exhaust\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWill help get the most out of your engine\u003c\/li\u003e\n\u003cli\u003eDesigned with utmost precision for perfection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1990-1991 Acura Integra RS\/LS\/GS\u003c\/li\u003e\n\u003cli\u003e1994-2001 Acura Integra RS\/LS\/SE\/GS\u003c\/li\u003e\n\u003cli\u003e1988-1991 Honda Prelude\u003c\/li\u003e\n\u003cli\u003e1996-2001 Honda CR-V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8 - Exhaust Valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupertech's Limited Manufacturer's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard","offer_id":7525834499,"sku":"SUP HEVN-1004-0-8","price":180.32,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize","offer_id":8962525635,"sku":"SUP HEVN-1004-8","price":180.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-29108613709894.jpg?v=1735717099"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-d16z6","title":"Supertech Black Nitride Exhaust Valves (Honda D16Z6)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Standard","offer_id":7525834755,"sku":"SUP HEVN-1012-8","price":180.32,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize","offer_id":8962652227,"sku":"SUP HEVN-1002-8","price":180.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11968042434630.jpg?v=1744823364"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-h22","title":"Supertech Black Nitride Exhaust Valves (Honda H22)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Standard (Flat Top)","offer_id":8962607619,"sku":"SUP HEVN-1006F-8","price":172.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-28301168017478.jpg?v=1744823363"},{"product_id":"supertech-black-nitride-exhaust-valves-honda-rsx-k20","title":"Supertech Black Nitride Exhaust Valves | Honda K20 Engines (HEVN-XXXXX-8)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eHonda K20 Black Nitride Exhaust Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eProduction of our racing valves begins with a one piece forging, where the head of the valve is forged under a slow two step process to keep a good material grain flow. The forging is then CNC machined in several steps to ensure the precision of the final dimensions. We then do another heat treatment for stress relieving followed by a nitride hardening treatment (or coating process depending on the application).\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eLastly, we do one more grinding, followed by our patented Superfinishing of the surface to ensure that each valve is free of any imperfections and the dimensions are precise.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eHigh quality one piece valve design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eMaximized durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eManufactured to strict tolerances\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuperfinish  reduces the surface roughness to 1\/3 of our chrome coated valve. The end result… unsurpassed performance and durability.\u003c\/li\u003e\n\u003cli\u003eOptimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda K20 Engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 - Set of Black Nitride Exhaust Valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard (Dish Top)","offer_id":7525836227,"sku":"SUP HEVN-1020D-8","price":187.39,"currency_code":"USD","in_stock":true},{"title":"Standard (Flat Top)","offer_id":8962829379,"sku":"SUP HEVN-1020F-8","price":187.39,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Flat Top)","offer_id":8962829507,"sku":"SUP HEVN-1021F-8","price":187.39,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Dish Top)","offer_id":8962829571,"sku":"SUP HEVN-1030D-8","price":195.02,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Flat Top)","offer_id":8962829699,"sku":"SUP HEVN-1030F-8","price":195.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-5287196547.jpg?v=1735717095"},{"product_id":"supertech-black-nitride-intake-valves-honda-rsx-k20-hivn-102x","title":"Supertech Black Nitride Intake Valves | Honda K20 Engine","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eHonda K20 Black Nitride Intake Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eProduction of our racing valves begins with a one piece forging, where the head of the valve is forged under a slow two step process to keep a good material grain flow. The forging is then CNC machined in several steps to ensure the precision of the final dimensions. We then do another heat treatment for stress relieving followed by a nitride hardening treatment (or coating process depending on the application).\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eLastly, we do one more grinding, followed by our patented Superfinishing of the surface to ensure that each valve is free of any imperfections and the dimensions are precise.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eHigh quality one piece valve design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eMaximized durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003c\/strong\u003eManufactured to strict tolerances\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSuperfinish  reduces the surface roughness to 1\/3 of our chrome coated valve. The end result… unsurpassed performance and durability.\u003c\/li\u003e\n\u003cli\u003eOptimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHonda K20 Engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 - Set of Black Nitride Intake Valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard (Dish Top)","offer_id":7525836675,"sku":"SUP HIVN-1020D-8","price":190.54,"currency_code":"USD","in_stock":true},{"title":"Standard (Flat Top)","offer_id":8964314371,"sku":"SUP HIVN-1020F-8","price":190.49,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Dish Top)","offer_id":8964314435,"sku":"SUP HIVN-1021D-8","price":190.54,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Flat Top)","offer_id":8964314499,"sku":"SUP HIVN-1021F-8","price":190.41,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Dish Top)","offer_id":8964314563,"sku":"SUP HIVN-1022D-8","price":190.54,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Flat Top)","offer_id":8964314627,"sku":"SUP HIVN-1022F-8","price":190.54,"currency_code":"USD","in_stock":true},{"title":"2mm Oversize (Flat Top)","offer_id":8964314691,"sku":"SUP HIVN-1023F-8","price":205.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11984001728582.jpg?v=1735717093"},{"product_id":"supertech-black-nitride-intake-valves-honda-s2000-f20","title":"Supertech Black Nitride Intake Valves (Honda S2000 \/ F20)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Standard (Dish Top) \/ Single","offer_id":7525837315,"sku":"SUP HIVN-1030D","price":24.89,"currency_code":"USD","in_stock":true},{"title":"Standard (Dish Top) \/ Set of 8","offer_id":12141210370118,"sku":"SUP HIVN-1030D-8","price":199.05,"currency_code":"USD","in_stock":true},{"title":"Standard (Flat Top) \/ Single","offer_id":8964348483,"sku":"SUP HIVN-1030F","price":24.89,"currency_code":"USD","in_stock":true},{"title":"Standard (Flat Top) \/ Set of 8","offer_id":12141210402886,"sku":"SUP HIVN-1030F-8","price":199.05,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Flat Top) \/ Single","offer_id":8964348547,"sku":"SUP HIVN-1033F","price":24.89,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Flat Top) \/ Set of 8","offer_id":12141210435654,"sku":"SUP HIVN-1033F-8","price":199.05,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Dish Top) \/ Single","offer_id":8964348611,"sku":"SUP HIVN-1033D","price":1000.0,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Dish Top) \/ Set of 8","offer_id":12141210468422,"sku":"SUP HIVN-1033D-8","price":1000.0,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Dish Top) \/ Single","offer_id":8964348675,"sku":"SUP HIVN-1035D","price":24.89,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Dish Top) \/ Set of 8","offer_id":12141210501190,"sku":"SUP HIVN-1035D-8","price":199.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-5287197379.jpg?v=1737127659"},{"product_id":"supertech-black-nitride-exhaust-valves-subaru-ej20-ej25-wrx-sti-turbo-dohc","title":"Supertech Black Nitride Exhaust Valves | 2002-2021 Subaru WRX \u0026 STI EJ20\/EJ25","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eBlack Nitride Exhaust Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003e\u003cstrong\u003eBlack Nitride Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConstructed specifically for each application\u003c\/li\u003e\n\u003cli\u003eStrict tolerances ensure the highest quality fitment\u003c\/li\u003e\n\u003cli\u003eSuperfinishing reduces surface roughness and increases flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely durable\u003c\/li\u003e\n\u003cli\u003eGreat flow characteristics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2014 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004-2021 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(8) Exhaust Valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard","offer_id":7525837571,"sku":"SUP SEVN-1010-8","price":197.97,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize","offer_id":8961727427,"sku":"SUP SEVN-1012-8","price":198.16,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize w\/ low groove","offer_id":8961727491,"sku":"SUP SEVN-1012-2-8","price":198.19,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize","offer_id":8961727555,"sku":"SUP SEVN-1014-8","price":152.4,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize w\/ low groove","offer_id":8961727619,"sku":"SUP SEVN-1014-2-8","price":199.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-28319752454214.jpg?v=1735717090"},{"product_id":"supertech-black-nitride-intake-valves-subaru-ej20-ej25-wrx-sti-turbo-dohc","title":"Supertech Black Nitride Intake Valves | 2002-2021 Subaru WRX \u0026 STI EJ20\/EJ25","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eBlack Nitride Intake Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003e\u003cstrong\u003eBlack Nitride Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConstructed specifically for each application\u003c\/li\u003e\n\u003cli\u003eStrict tolerances ensure the highest quality fitment\u003c\/li\u003e\n\u003cli\u003eSuperfinishing reduces surface roughness and increases flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely durable\u003c\/li\u003e\n\u003cli\u003eGreat flow characteristics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2002-2014 Subaru WRX\u003c\/li\u003e\n\u003cli\u003e2004-2021 Subaru STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIntake Valve(s)\u003cbr\u003edependent on quantity selected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard \/ Single (1)","offer_id":7525838787,"sku":"SUP SIVN-1010","price":24.98,"currency_code":"USD","in_stock":true},{"title":"Standard \/ Full Set (8)","offer_id":30253363003462,"sku":"SUP SIVN-1010-8","price":199.77,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize \/ Single (1)","offer_id":8961935939,"sku":"SUP SIVN-1012","price":24.99,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize \/ Full Set (8)","offer_id":30253363036230,"sku":"SUP SIVN-1012-8","price":199.9,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize w\/ low groove \/ Single (1)","offer_id":8961936003,"sku":"SUP SIVN-1012-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize w\/ low groove \/ Full Set (8)","offer_id":30253363068998,"sku":"SUP SIVN-1012-2-8","price":199.9,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Single (1)","offer_id":8961936067,"sku":"SUP SIVN-1014","price":24.99,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Full Set (8)","offer_id":30253363101766,"sku":"SUP SIVN-1014-8","price":204.21,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize w\/ low groove \/ Single (1)","offer_id":8961936131,"sku":"SUP SIVN-1014-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize w\/ low groove \/ Full Set (8)","offer_id":30253363167302,"sku":"SUP SIVN-1014-2-8","price":199.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11967233130566.jpg?v=1735717088"},{"product_id":"supertech-black-nitride-intake-valves-dsm-evo","title":"Supertech Black Nitride Intake Valves | Multiple Mitsubishi Fitments (MIVN-100X-XX)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eMultiple Mitsubishi Fitments Black Nitride Intake Valves by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eDesigned utilizing the latest technology, this product by Supertech features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHead Diameter: 34.00mm\u003c\/li\u003e\n\u003cli\u003eStem Diameter: 6.57mm\u003c\/li\u003e\n\u003cli\u003eLength: 109.6mm\u003c\/li\u003e\n\u003cli\u003eQuantity: Set of 8\u003c\/li\u003e\n\u003cli\u003eMaterial: Black Nitrided\u003c\/li\u003e\n\u003cli\u003eMade with precision and quality in mind\u003c\/li\u003e\n\u003cli\u003eDesigned to meet your specific needs\u003c\/li\u003e\n\u003cli\u003eMade from high-quality materials for ultimate durability\u003c\/li\u003e\n\u003cli\u003eDesigned to deliver trouble-free, consistent performance\u003c\/li\u003e\n\u003cli\u003eManufactured to meet or exceed strict quality requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eImproved Valvetrain Reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1990-1999 Mitsubishi Eclipse\u003c\/li\u003e\n\u003cli\u003e1990-1998 Eagle Talon\u003c\/li\u003e\n\u003cli\u003e1990-1994 Plymouth Laser\u003c\/li\u003e\n\u003cli\u003e1992-2006 Mitsubishi Evo 1\/2\/3\/4\/5\/6\/7\/8\/9\u003c\/li\u003e\n\u003cli\u003e1983-2004 Mitsubishi Galant\u003c\/li\u003e\n\u003cli\u003e1981-1987 Mitsubishi Lancer\u003c\/li\u003e\n\u003cli\u003e1992-1995 Mitsubishi Lancer\u003c\/li\u003e\n\u003cli\u003e1998-2006 Mitsubishi Lancer\u003c\/li\u003e\n\u003cli\u003e1982-1989 Mitsubishi Starion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 - Intake Valve Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSuperTech's Limited Manufacturer's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard","offer_id":7525843203,"sku":"SUP MIVN-1007-8","price":190.49,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize","offer_id":8961229891,"sku":"SUP MIVN-1008-8","price":190.58,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize","offer_id":8961229955,"sku":"SUP MIVN-1009-8","price":190.41,"currency_code":"USD","in_stock":true},{"title":"2mm Oversize","offer_id":8961230019,"sku":"SUP MIVN-1010-8","price":190.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-29162128638022.jpg?v=1735717087"},{"product_id":"supertech-black-nitride-intake-valves-evo-x","title":"Supertech Black Nitride Intake Valves | 2008-2015 Mitsubishi Evo X (MIVN-1017)","description":"\u003cdiv id=\"newdescr\"\u003e\n\u003cdiv id=\"newdescrRC\"\u003e\n\u003ch2\u003eBlack Nitride Intake Valves for Evo X by Supertech\u003c\/h2\u003e\n\u003cp align=\"justify\"\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003e\u003cstrong\u003eBlack Nitride Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003cp align=\"justify\"\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or break when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll valves are swirl polished\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlack nitride treatment causes less friction between the stem and the guide, allowing for more power\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"newdescrLC\"\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2008-2015 Mitsubishi Evo X\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's In The Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIntake Valve(s)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer Standard Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clear\"\u003e\u003c\/div\u003e","brand":"Supertech","offers":[{"title":"Standard \/ Single (1)","offer_id":7525844227,"sku":"SUP MIVN-1017","price":25.76,"currency_code":"USD","in_stock":true},{"title":"Standard \/ Full Set (8)","offer_id":30253341966406,"sku":"SUP MIVN-1017-8","price":205.97,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Single (1)","offer_id":8961282051,"sku":"SUP MIVN-1019","price":25.76,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize \/ Full Set (8)","offer_id":30253342031942,"sku":"SUP MIVN-1019-8","price":205.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-11982976352326.jpg?v=1737127658"},{"product_id":"supertech-black-nitride-intake-valves-honda-b16a-b18c","title":"Supertech Black Nitride Intake Valves (Honda B16A \/ B18C)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes a set of 8 valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e\u003c\/eol\u003e","brand":"Supertech","offers":[{"title":"Standard (Dish Top)","offer_id":7525845123,"sku":"SUP HIVN-1000-8","price":182.62,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Flat Top)","offer_id":8963027779,"sku":"SUP HIVN-1000F-8","price":182.62,"currency_code":"USD","in_stock":true},{"title":"0.5mm Oversize (Dish Top)","offer_id":8963027843,"sku":"SUP HIVN-1000D-8","price":182.62,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Flat Top)","offer_id":8963027907,"sku":"SUP HIVN-1001F-8","price":182.56,"currency_code":"USD","in_stock":true},{"title":"1mm Oversize (Dish Top)","offer_id":8963027971,"sku":"SUP HIVN-1001-8","price":182.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6136\/products\/supertech-5287200771.jpg?v=1744823362"},{"product_id":"supertech-black-nitride-intake-valves-honda-b18a-b18b","title":"Supertech Black Nitride Intake Valves (Honda B18A \/ B18B)","description":"\u003cp\u003eSupertech Performance uses their experience of more than 20 years in the manufacturing of racing valves, do intensive testing and work very closely with many engine builders in order to continuously improve and provide the market with the best possible product for every application. High flow rates, durability and quality are of great concern to Supertech Performance.\u003c\/p\u003e\n\u003ceol\u003e\n\u003ch3\u003eBlack Nitride Coating\u003c\/h3\u003e\n\u003ceol\u003e\n\u003cp\u003eThis is a hardening treatment that even though it is not widely used as the chrome coating, it has several benefits and is becoming very popular, mainly for European and Japanese applications. The microhardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (microhardness is 800HV minimum). Surface Finish is smoother than with chromed stems, having less friction between stem and guide. Value seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other \"explosive\" mixes. 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Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats).\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eHigher RPM engines take full advantage of all previous features. The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction.\u003c\/p\u003e\n\u003ceol\u003e\n\u003cp\u003eThe nitrided layer is adhered to the base material at a microscopic level, so does not \"flake\" or brake when the valves bend due to impacts with the pistons. The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. 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