The Competition Clutch Stage 5 1420 assembly comes with a double spring, six rivet carriage and is specifically designed to make gear changes smooth in high horsepower applications. This disc complimented by a performance pressure plate provides 300% increase in torque capacity. Competition Clutch recommends a minimum 300 mile break-in for best performance with this set-up. The 1420 Series kit includes a performance pressure plate, a four puck high torque sprung disc Ceramic buttons, all applicable bearings, and the appropriate alignment tool. Please be aware that this clutch will produce extremely high levels of noise, vibration and harshness. Intended for light street use only.