4P RACE CASTING CNC Cylinder Head

Introducing 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 race port that has not lost a SINGLE race since that day.  Our warpath has not only won every All Motor race competition since, but has held every record in the class since....the rampage has been so fierce that the competition has all but quit.In 2021, 4 Piston Racing, Endyn, and MAST Motorsports entered into a partnership for 4P to have exclusive rights to the race casting going forward. This partnership has allowed us to reinvigorate the work we did on the 4P Billet, and deliver the REAPER to you.  These cylinder heads are produci