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. Stage 4: Clutch Kit: 2004-06 Scion xA, 04-06 xB, 03-05 Toyota Echo, 06-09 Yaris 1.5L Scion: xA 04 - 06 1.5 L Engine, Scion: xB 04 - 06 1.5 L Engine, Toyota: Echo 03 - 05 1.5 L Engine, Toyota: Yaris 06 - 09 1.5 L Engine