In other words

the entire pedal box can be adjusted quickly and precisely—ideal for race teams

Increased disc mass for higher heat capacity

Twin Piston Rings – Reduces oil leakage risks

45mm TS Wastegates

Mahle Motorsport PowerPak Piston Set, BMW S65 1301806 In other wordsThe 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.