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  • Supertech Black Nitride Intake Valves | 2002-2020 Subaru WRX & STI EJ20/EJ25
  • Supertech Black Nitride Intake Valves  SUBARU EJ20 / EJ25  WRX / STi Turbo DOHC - Modern Automotive Performance
  • Supertech Black Nitride Intake Valves | 2002-2020 Subaru WRX & STI EJ20/EJ25

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    Supertech

    Supertech Black Nitride Intake Valves | 2002-2020 Subaru WRX & STI EJ20/EJ25

    PART#
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 17.09   $ 23.73
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    Black Nitride Intake Valves by Supertech

    Supertech 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.

    Black Nitride Coating

    This 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).

    Features

    • Constructed specifically for each application
    • Strict tolerances ensure the highest quality fitment
    • Superfinishing reduces surface roughness and increases flow

    Benefits

    • Extremely durable
    • Great flow characteristics

    Applications

    • 2002-2014 Subaru WRX
    • 2004-2020 Subaru STI

    What's In The Box?

    • Intake Valve(s)
      dependent on quantity selected

    Warranty

    • No Warranty

    Black Nitride Intake Valves by Supertech

    Supertech 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.

    Black Nitride Coating

    This 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).

    Features

    • Constructed specifically for each application
    • Strict tolerances ensure the highest quality fitment
    • Superfinishing reduces surface roughness and increases flow

    Benefits

    • Extremely durable
    • Great flow characteristics

    Applications

    • 2002-2014 Subaru WRX
    • 2004-2020 Subaru STI

    What's In The Box?

    • Intake Valve(s)
      dependent on quantity selected

    Warranty

    • No Warranty

    Customer Reviews

    Based on 1 review
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    J
    J.
    Best Bang for your buck

    Easy installation at the machine shop, will have power numbers here shortly. Went from stock heads to supertech valves, ferrea valve springs and retainers, ported heads in a v6 sti ej207. 10/10 would recommend buying for +400

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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    Unfortunately we are not able to ship this item outside of the United States.
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