or building a race or rally car

a recognized leader in performance coatings

PFF5-4655 does not fit cars with automatic transmission

quality and pride go hand-in-hand

Trusted by engine builders worldwide for high-horsepower applications

N52 Combustion Chamber Upgrade Service F91 M8 or building a race or5150 AutoSport Combustion Chamber Upgrade Service for BMW N52 Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Our CNC Cylinder Head Combustion Chamber Service is a precision machining process where the combustion chambers of an engine's cylinder head are reshaped and refined using Computer Numerical Control (CNC) technology, optimizing engine performance for street or