Spec Clutch SM513 Stage 3 Performance Clutch Kit with Carbon Semi-Metallic Disc

The SPEC SM513 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand high torque capacity without sacrificing everyday drivability. Designed for drivers who push their vehicles hard across multiple disciplines, the Stage 3 delivers a comfortable pedal feel, quick engagement, and impressive wear characteristics under both low and high stress conditions.

At the core of the Stage 3 is a high-clamp pressure plate paired with a carbon semi-metallic friction disc in either a 4-puck or 6-puck configuration — with 6-puck being standard on most applications. The 4-puck option is available upon request for specific setups requiring different engagement characteristics. The sprung hub features a double-sprung design with spring cover reliefs, providing added drivetrain flexibility while heat-treated internal components ensure long-term strength and durability.

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic 4 or 6-puck friction disc (6-puck standard)
• High-torque sprung hub and disc assembly
• Release bearing
• Alignment tool kit

Ideal Driving Applications:

• Street
• Drag Racing
• Drift
• Road Racing
• Rallye
• Pulling
• Autocross

All SPEC clutch kits are designed, hand-built, and tested in the U.S.A., ensuring consistent quality and race-proven performance for serious enthusiasts and competitors alike.