Brand: Advanced Clutch Technology Manufacturer's Part Number: FM13-HDSS Part Type: Clutch Kits Product Line: ACT Heavy-Duty Clutch Kits Automotive Fittings Part Number: ACL-FM13-HDSS UPC: 00842385016616 Clutch Usage: Performance Clutch Disc Quantity: 1 Flywheel Included: No Input Spline Quantity: 23 Input Shaft Diameter: 1.000 in. Disc Diameter (in.): 11.000 in. Disc Diameter (mm): 279mm Disc Material: Metallic/Organic Disc Style: Full face Hub Style: Sprung Pressure Plate Style: Diaphragm Throwout Bearing Included: No Alignment Tool Included: Yes Pilot Bushing Included: Yes Pilot Bushing Material: Steel Counterweight Assist: No Mounting Hardware Included: No Quantity: Sold as a kit. Notes: For 8-bolt crankshafts only. Alignment dowels required for OE flywheels. 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.