Spec Clutch SC903 Stage 3 Performance Clutch Kit Carbon Semi-Metallic 6-Puck

The SPEC SC903 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand aggressive torque capacity without sacrificing daily drivability. Featuring a comfortable pedal feel and quick, confident engagement, this kit bridges the gap between an uncompromising race clutch and a livable street clutch — making it ideal for drivers who push hard on the strip or track and still drive home.

Key Features:

• Carbon Semi-Metallic 6-Puck Sprung Hub Disc — the industry-leading puck clutch design for drivability, service life, and high torque capacity
• High-Clamp Pressure Plate — delivers increased clamping force for superior power transfer under high-stress conditions
• Double-Sprung Hub with Spring Cover Reliefs — provides flexibility and reduces drivetrain shock, while heat-treated components ensure strength and long-term durability
• Carbon-Graphite Friction Material — offers excellent bite, quick shifts, and consistent performance across a wide range of temperatures
• Complete Kit Includes: High-clamp pressure plate, carbon semi-metallic puck disc with sprung hub assembly, throwout bearing, pilot bearing, and alignment tool
• 4-Puck Configuration Available — standard is 6-puck; 3-puck configuration also available on select applications

Recommended Driving Applications: Street, Drag Racing, Drifting, Road Racing, Rallye, Pulling, Autocross

Disc Diameter: 12.000 in.  |  Input Shaft Diameter: 1.125 in.  |  Input Spline Count: 10  |  Flywheel Included: No

All SPEC clutch kits are designed, hand-built, and tested in the U.S.A. to deliver race-proven performance across thousands of applications.