Exedy Stage 4 Heavy Duty Twin Metallic Disc Clutch Kit - Subaru STI 2004-2020The Exedy Stage 4 Heavy Duty Twin Metallic Disc Clutch Kit is ideal for those who are making big horsepower numbers, or for those who participate in many forms of motorsports such as drag, road, and rally racing. Basically, any high performance driving conditions where a normal clutch could not withstand the perils and abuse associated with such driving conditions. Features: Hyper twin clutch Ceramettalic sprung center disc Pull type cover Clamp load: