and proven results—perfect for extracting more power from your BMW M20B20

leads to power loss and combustion leaks at high RPMs

making it a solid platform for street builds

renowned for their engineering and versatility

Designed for naturally aspirated and turbocharged setups

CP Forged Piston Set, BMW / Rolls-Royce N74R, Pro-Xtreme, Alusil 740i and proven results—perfect for extractingThese pistons are suitable for use in engine blocks with factory alusil bores, no sleeving is required. Recommended piston to wall clearance is ~0. 0025 0. 0035 in The 5150 AutoSport Pro Xtreme Forged Pistons, made by CP Carrillo, are designed to handle extreme horsepower and high RPM applications for BMW and Rolls Royce N74R engines. Constructed from high strength, aircraft grade steel, these pistons are engineered to withstand the forces generated