precise control loops

and high RPM shifting

The dyno limiter and top speed governors are also removed

ensuring protection and safety

specifically designed for BMW M54 engines

CP Forged Piston Set, BMW S55 Pro-Xtreme Compression Ratio:9:1 precise control loops5150 AutoSport Pro Xtreme Forged Pistons for BMW S55 Engines Built for Extreme Power and Precision The 5150 AutoSport Pro Xtreme Forged Pistons, manufactured by CP Carrillo, are designed to meet the extreme demands of high performance BMW S55 engines. Made from high strength, aircraft grade aluminum, these pistons deliver the durability required for turbocharged, supercharged, and naturally aspirated applications. Engineered for 2000 horsepower builds