Clutch Masters FX850 Twin Disc Clutch Kit w/ Steel Flywheel | 2001 - 2006 BMW M3 (03040-TD8R-S)Twin Disc Clutch Kit w Steel Flywheel by Clutch Masters Clutch Masters is proud to introduce the finest and most economical multi plate clutch systems available for today s high performance vehicles, the 725 and 850 Series. Clutch Masters Twin Disc systems are pure racing technology that also works well in high performance street applications that will be used on the street on rare occasions. They are designed to hold tremendous horsepower and torque