Stage 1 in the Single Sports Series comprises an EXEDY sports cover assembly, Sports Organic (SO) clutch disc and release bearing. The sports cover assembly boasts higher clamp loads, spheroidal graphite pressure plate castings and additional drive straps are utilised to prevent pressure plate casting failure at high RPM. The Sports Organic disc features a premium friction material for superior durability and engagement characteristics as well as high rate damper springs to handle increased torque. IMPORTANT: With any ceramic button clutch system, there will be some compromise of start-up driveability when compared to a standard clutch (chatter on light throttle, low RPM start-up) in addition to an increase in cabin/transmission noise. This characteristic is generally deemed acceptable in modified performance cars. Drivers of vehicles fitted with cerametallic clutches on the street should be warned not to ride the clutch or try to reduce the chatter as this will greatly increase the wear rate. The above information should be used as a guide only, please consult your Exedy distributor if further advice is required.