Spec Clutch SC423H Stage 2+ Performance Clutch Kit with Carbon-Kevlar Multi-Friction Disc

The Spec Clutch SC423H Stage 2+ Clutch Kit is engineered for modified, high-performance engines that demand more torque capacity than a standard Stage 2 clutch can deliver — without sacrificing the street-friendly drivability that makes daily driving practical. Bridging the gap between Stage 2 and Stage 3, this kit delivers a 15–20% higher torque capacity while maintaining the smooth engagement feel characteristic of the Stage 2.

Key Features:

• Multi-friction composite disc in a full-faced configuration — carbon semi-metallic material on one side and Kevlar on the other for an optimal balance of grip and wear life
• High clamp pressure plate engineered to handle elevated torque loads from modified engines
• Double-sprung hub with spring cover reliefs for added flexibility and vibration damping (application dependent)
• Heat-treated components throughout the hub assembly for long-term strength and durability
• SFI approved — meets safety standards for performance and motorsport use
• Kit includes release bearing and installation tool kit

Recommended Driving Applications: Street, Drag Racing, Road Racing, Rally, Autocross, Pulling, and Drift

Designed and hand-built in the USA, SPEC clutch kits are developed to precise specifications for specific driving environments. The SC423H is an ideal upgrade for enthusiasts running bolt-on or forced induction modifications who need a proven, high-torque clutch solution that still behaves well on the street.