Increased disc mass for higher heat capacity

-SFI Certification

E36 / E37 Z3 3

75mm Exhaust   Race  304° Intake / 296° Exhaust   13

Mahle Motorsport PowerPak Piston Set, BMW S65 1301806 Increased disc mass for higherThe MAHLE Motorsport PowerPak kit is their high volume shelf stock program developed for high performance enthusiasts. PowerPak pistons are made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances and improved temperature stability. PowerPak Features: Forged piston for performance applications Fully machined crown Grafal anti Friction coating on skirts reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.