CP Forged Piston Set, BMW S54 Pro-Xtreme Compression Ratio:12.5:1 Finished with avionics-grade hard chrome

Finished with avionics-grade hard chrome plating and featuring a specially hardened tip

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Heat Shield with (2) M8 x 16mm19

Outer Spring OD: 24

CP Forged Piston Set, BMW S54 Pro-Xtreme Compression Ratio:12.5:1 Finished with avionics-grade hard chrome5150 AutoSport Pro Xtreme Forged Pistons for BMW S54 Engines Built for Performance and Reliability The 5150 AutoSport Pro Xtreme Forged Pistons, made in collaboration with CP Carrillo, are engineered for extreme horsepower and high RPM BMW S54 applications. Designed specifically for BMW S54 engines with 139 mm rods, these pistons are constructed from high strength, aircraft grade aluminum to withstand the intense forces generated by high powered