Clutch Masters FX850 Twin Disc Race/Street Clutch Kit | 1999 - 2003 Audi A3 (02017-TD8S-XH)Twin Disc Race Street Clutch Kit by Clutch Masters The 850 series is a larger diameter assembly, which is designed for high horsepower applications. The 850 Series has a higher holding capacity, less clutch chatter, and a smoother engagement compared to the 725 Series. The 850 series Twin disc will accept one sprung disc creating a slightly smoother engagement compared to two rigid discs. Features Aluminum Cover Assembly with attached Diaphragm