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The P Racing 5 axis cylinder heads are used in the some of the fastest cars in the world. Over 10 years of R&D our cylinder heads have come a long way in the sport compact world. 

The Prayoonto Racing Endurance cylinder head package is designed to offer the biggest power for customers competing in road racing or street engines with smaller camshafts and overall powerband in mind. with a 36mm valve it flows over 360 cfm at .550 lift and can make well over 300whp with approriate supporting engine parts. In fact, we have made over 300whp with our circuit k20 crate motors that are just barely over 2 liters. 2.4 liter circuit engines see well beyond 300whp and 200 ft lbs of torque with huge power band. This head will work great for anyone using our stage 2, 3 or 4 camshafts. beyond this we reccomend our Grassroots cylinder head. 

1450 includes - CNC port, CNC spec chamber, Race valve job, cleaning and assembly

If supertech valvetrain is selected this includes CNC valve locks, Viton valve seals and appropriate spring seat

K series Endurance package

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