The Street 450 single disc kit is an excellent upgrade from your stock clutch and is designed to handle mildly modified engines up to 450 horsepower. It is a great clutch where drivability is the most important factor. Our clutch features 30% greater clamping force than a stock clutch allowing you to put more power to the ground and top-quality disc material allows for smooth, no-chatter engagement. Kit includes pressure plate, clutch disc, alignment tool, and instructions. *This clutch is made to work with the early flat style flywheels found on LS1 and LS6 engines. It will not work with the recessed surface flywheels found on LS2, LS3, and LS7 engines. However, if paired with the proper flywheel, the combination can be bolted up to any 6-bolt crank LS engine. **Pair with Hays 10-730 or 20-730 for a perfect match.