CLUTCH MASTERS BMW 228 230 320 328 428 430 14 18 2.0L N20 TURBO CLUTCH MASTERS GTI 02 05 2.8L MK4 24V 6 SPEED Aluminum Flywheel FW 207 Clutch Masters Lightweight Aluminum Flywheel 2004 2008 BMW Z4 (FW CM4 AL) Clutch Masters FW 028 AL Lightweight Aluminum Flywheel CLUTCH MASTERS BMW M3 09 13 4.0L E90 6 SPEED Aluminum Flywheel FW 148. Lightweight Aluminum Flywheel by Clutch Masters Every Clutch Masters flywheel is proudly designed and manufactured in the USA. Flywheels are first designed in CAD and are then precision CNC machined in house in one of or Haas CNC lathes out of 6061 aluminum or 1045 steel billet cores. After machining, the flywheel is zero balanced to ensure it is evenly weighted on all sides and spins 100 per cent true. Each aluminum flywheel is Type 3 Hard Anodized for the ultimate in durability and protection of the aluminum. All steel flywheels are black oxide coated to add a layer of rust prevention and gives our steel flywheels a unique black finish. The flywheel is then assembled by a Clutch Master Craftsman, double checked for imperfections and tolerances. All flywheels are SFI 1. 2 Certified for use in motorsports. Features Clutch Masters Lightweight Aluminum Flywheel Benefits Proudly designed and manufactured in the USA Flywheels are first designed in CAD Precision CNC machined Zero balanced to ensure it is evenly weighted on all sides and spins 100 per cent true Applications 2004 2008 BMW Z4 What's In The Box? 1 Lightweight Aluminum Flywheel Warranty Manufacturers Standard Warranty