Brand: Advanced Clutch Technology Manufacturer's Part Number: GM4-HDG6 Part Type: Clutch Kits Product Line: ACT Heavy-Duty Clutch Kits Automotive Fittings Part Number: ACL-GM4-HDG6 UPC: 00842385013110 Clutch Usage: Performance Clutch Disc Quantity: 1 Flywheel Included: No Input Spline Quantity: 10 Input Shaft Diameter: 1.125 in. Disc Diameter (in.): 11.000 in. Disc Diameter (mm): 279mm Disc Material: Ceramic Disc Style: 6-paddle Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: Yes Alignment Tool Included: Yes Pilot Bushing Included: Yes Pilot Bushing Material: Brass Counterweight Assist: No Mounting Hardware Included: No Quantity: Sold as a kit. Notes: 6-paddle spring center disc. Aggressive clutch engagement. Description: ACT heavy-duty clutch kits offer a clamp load increase of 20 to 50 percent over OEM, significantly increasing torque capacity. The pedal feel with these clutches varies from stock to a moderate increase. Available for street and race applications, many are SFI-certified to ensure safety.