Ironman Sprung (Street) Clutch Kit for BMW Z4 2003 - 10/2003 2.5L DOHC (E85, E86) RWD Includes Lightened Flywheel Ironman Sprung (Street) Clutch Kit for BMW Z4 2003 - 10/2003 2.5L DOHC (E85, E86) RWD Includes Lightened Flywheel