Cylinder Heads & Valvetrain Components

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ADJUSTABLE CAM GEAR RB26DETT/RB25DE(T)/RB20DE(T) EX by Tomei - Modern Automotive Performance
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ADJUSTABLE CAM GEAR RB26DETT/RB25DE(T)/RB20DE(T) IN by Tomei - Modern Automotive Performance
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VALVE GUIDE SET 4G63 by Tomei - Modern Automotive Performance
$216.00 $240.00

VALVE GUIDE SET 4G63 by Tomei
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ADJUSTABLE CAM GEAR SR20DE(T) 1pc by Tomei - Modern Automotive Performance
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CAM CAP STUDS SET RB26DETT by Tomei - Modern Automotive Performance
$126.00 $140.00

CAM CAP STUDS SET RB26DETT by Tomei
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TEST SHIM & GUIDE SET for SR20DE(T) by Tomei - Modern Automotive Performance
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OVER SIZE VALVE SET RB26DETT by Tomei - Modern Automotive Performance
$648.00 $720.00

OVER SIZE VALVE SET RB26DETT by Tomei
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Tomei Valve Spring Kit 4B11 (Evo X) - Modern Automotive Performance
$270.00 $300.00

Tomei Valve Spring Kit 4B11 (Evo X)
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Tomei Valve Springs Set KIT Type B Nissan Skyline GT-R RB26DETT - Modern Automotive Performance
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Tomei 163022 Valve Springs Set KIT Type B Skyline R33 RB25DETT - Modern Automotive Performance
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Cylinder heads

For everything else you can do to amp up your engine, it comes down to combustion – and in this sense, the cylinder block is the heart of the engine. A good cylinder head and valvetrain are essential for maximizing the effectiveness of the internal combustion engine and pushing air, fuel and exhaust where they need to go. Our automotive cylinder heads and valvetrain components maximize flow for performance so incredible, this chamber of secrets will seem almost wizardly.

We offer performance cylinder heads and cylinder rebuilds that are precision-machined for maximum efficiency and usable power. Cosworth performance cylinder heads and Tomei heads come complete with ported runners, performance valve jobs and an overhead camshaft. For Mitubishi Evo owners, MAP offers five stages of in-house cylinder head preparation, ranging from basic exhaust valve jobs and cleaning to aggressive, efficient port designs and polishing for serious racers. We also offer a cylinder overbore option with multiple choices for exhaust valves, seals, guides and springs.

If you’re looking to do your own rebuild or maintenance, our valvetrain parts run the gamut for vehicles and engines of all kinds. MAP high performance valves use an undercut stem that reduces weight for improved air/fuel flow and RPM limits. Strong seals are vital for keeping fluids and gasses contained, and Cometic head gaskets use three layers of stainless steel for long lasting protection. In our inventory, you can find overhead camshaft products, aluminum valve covers, intake valve guides, beehive valve springs and anything else you can think of for overhauling your valvetrain. We even have sprocket tools and valve spring compressors to make your rebuild easier.

Whether you’re a professional racer or a track day enthusiast, you’ll love the power and reliability that beats in the heart of your engine when you’re done with us. From providing expert advice to testing your head rebuilds at our machine shop, we’ve been trusted to do great work at a great price for a decade and counting. Check out our selection of performance cylinder heads and select heads for any engine size today and feel the roar under your hood.