Clutch Kit Street 450 Clutch Kit Street 450 Clutch Kit; Single 11 in. Disc; 26 Spline by 1-1/8 in.; Incl. Alignment Tool/Throwout Bearing; Organic; SPECIFICATIONS: Alignment Tool Included: Yes Disc Diameter (in.): 11 Disc Material: Organic Disc Type: Spring Hub Input Shaft Diameter: 1.125 Input Shaft Spline Quantity: 10 Maximum Horsepower: 450 Pilot Bushing Included: No Pressure Plate Type: Diaphram Throwout Bearing Included: Yes WARNING CA Proposition 65: No FEATURES: Great Drivability For Power Levels Up To 450 HP Smooth Chatter Free Operation w/Organic Surface Material Upgraded Damper Springs Gives 30% More Clamp Pressure Clutch Disc Has 8 Spring Hub For Increased Load Capacity Kits Comes Complete With Flywheel/Alignment Tool/Hardware Limited 90 Day Warranty The Street 450 single disc kit is an excellent upgrade from your stock clutch and designed 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. Each kit includes pressure plate, clutch disc, throwout bearing, alignment tool, and instructions. Drag racing's biggest stars have relied on Hays clutches since SEMA Hall of Famer Bill Hays decided back in 1958 that there had to be a way to build one that could stand up to racing's unimaginable power and torque. "Big Daddy" Don Garlits, Tom "the Mongoose" McEwen, and countless icons of the sport went to just one place for their clutches: Hays. Now part of Holley Performance, Hays continues to develop complete clutch kits for an infinite number of high-performance applications, pressure plates for precise gear changes, clutch discs for smooth, chatter-free engagement, and flywheels and flexplates ideal for today's vehicles.