The Competition Clutch Stage 4 - Strip Series 1620 Clutch Kit, available with a double spring, six rivet carriage is good for ease of gear transition with higher horsepower. This disc complimented by a performance pressure plate provides 250% increase in torque capacity. The 1620 Series kit includes a performance pressure plate, a six puck high torque sprung disc with Ceramic buttons, all applicable bearings, and the appropriate alignment tool. PartNumber : comp6046-1620 Description : Strip Series 1620 Clutch Kit Drivetrain::Clutch Kits - Single