Fidanza Aluminum Flywheel | 2000-2002 Audi S4 / RS4 (112621)/h2> Fidanza Performance flywheel\’s are engineered from 6061 T6 aluminum and are 40% – 60% lighter than stock. The reduction of weight helps increase horsepower and torque throughout the rpm range. Fidanza flywheels also feature the industry changing replaceable friction plate that is also made of 1050 heated steel. The replaceable friction plates are easily serviceable at the track or your garage, the friction kits include military grade aerospace fasteners with self-locking nuts. Features Increased throttle response Military grade hardware Replaceable friction plate Great for road racing, drag racing and daily driving Applications 2000-2002 Audi S4 / RS4 What\’s In The Box? (1) Lightweight Aluminum Flywheel and all necessary hardware Warranty Manufacturer Standard Warranty