The Street Extreme is ideal for both the street and the track. We recommend it for cars up to 700 crank Hp/Tq (depending on part number) with moderate engine mods and street tires. The kit is SFI approved. Included is a high clamp load pressure plate, a dual face ceramic disc for smooth engagement and awesome holding power. Our kits are complete with Pressure Plate, Disc, throw out bearing (where applicable) pilot bushing (where applicable) and alignment tool.