the 5150 AutoSport Pro-Xtreme Valve Springs deliver flawless valve control

circuit racing

Manufactured in Germany

This OEM BMW S58 Cylinder Head is a premium

B38 Forged Piston Set | CP-Carrillo | MINI BMW Compression Ratio:9:1 the 5150 AutoSport Pro-Xtreme ValveUpgrade your MINI BMW B38 engine with the B38 Forged Piston Set from CP Carrillo, the industry leader in high performance piston design. Built from premium forged aluminum alloy, these pistons deliver the strength, precision, and reliability required for both high horsepower and high RPM builds. Key Features & Benefits: Lightweight Forged Aluminum Construction reduces piston weight for faster throttle response and improved engine acceleration.