The Hays Diesel 650 clutch kits are an excellent upgrade from your stock clutch and designed handle Diesel engines with up to 650 ft. lbs. torque. It is a great clutch where drivability is the most important factor along with a stock pedal feel. Kit features a matched pressure plate and a heavy duty, high torque steel back clutch disc. This riveted clutch disc with advanced steel back friction material provides additional clamping force and superior strength. A reinforced steel backing allows for better heat dissipation delivering extended wear and quick recovery. The steel back facings are riveted to a marcel fin disc design which allows for smooth and positive engagement for street, towing, or heavy hauling applications. It offers up to 30% greater clamping force than a stock clutch allowing you to put more power to the ground and top quality materials allow for smooth, no-chatter engagement. Smooth Chatter-Free Operation Replacement For Stock Clutch Great Drivability Limited 90 Day Warranty Additional Attributes: GTIN: 00084041132302 Center Bore Diameter: 2.750 in. Engine Balance: External Finish: Steel Material: Steel Tooth Quantity: 166 WARNING CA Proposition 65: No Extened Information: Emissions : Legal US Life Cycle Status: Available To Order Packaging: Quantity of Each: Package UOM: Dimension: 15.5000 x 15.7000 x 1.4000 inches