The Competition Clutch Stage 4 Sprung Strip Series 1620 Clutch Kits provide up to 250% increase in torque capacity. The six-puck high torque sprung disc with Ceramic buttons is good for penetrating engagement with higher horsepower applications. The 1620 Series kits include a Competition Clutch performance pressure plate, 6 puck torque sprung disc with Ceramic buttons, throw out bearing (where applicable), pilot bearing/bushing (where applicable), and alignment tool.