Ø140mm / 5.5" Porsche 991 GT3 CUP 3.8L Flywheel ECHO Made from high-strength nickel-chromium-molybdenum (Ni-Cr-Mo)

Made from high-strength nickel-chromium-molybdenum (Ni-Cr-Mo) alloy steel

thanks to large windows and multi-hole designs

25") Step-Type Race Clutch kits

184mm Upper Clutch Disc  | 26mm/24teeth

Direct-fit Torsen (gear-type) limited-slip differential designed for the small 168 mm BMW differential

Ø140mm / 5.5" Porsche 991 GT3 CUP 3.8L Flywheel ECHO Made from high-strength nickel-chromium-molybdenum (Ni-Cr-Mo)Flywheel Design & Key Improvements Our flywheel retains the same dimensions and weight (2. 95 kg) as the Porsche Motorsport flywheel (PN: 99710204192 997. 102. 041. 92 997 102 041 92) but features several significant upgrades: One Piece Design with Integral Ring Gear Far more reliable than the Porsche Motorsport Sachs Racing two piece bolt on ring gear system. High Strength Forged Chromoly Steel (CrMo) Special nitriding heat treatment provides a 60