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Ships within 48 hours · Estimated delivery Nov 16 - Nov 21
S10165- 16
along with hard chrome stems and friction-welded hard tips
4P PSI Pro Stock valve springs
-Upgrade for Honda TC and TCR
Every detail matters when you are chasing the edge
4P RACE CASTING CNC Cylinder Head Stroker Kits S10165- 16Introducing the 4P Race Casting Months of development has lead to this. In 2018 we worked tirelessly on developing a superior port for our Billet K20 cylinder head. It is a clean slate design that could not fit into any OEM cylinder head casting, and one that outflowed anything on the market by a landslide. Unfortunately after complaints from our competitors, our Billet head was banned from competition. We immediately put that energy into developing a
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