Spec Clutch SM103H Stage 2 Plus Performance Clutch Kit

The Spec Clutch SM103H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can deliver. Bridging the gap between the Stage 2 and Stage 3, the Stage 2 Plus retains the smooth, familiar engagement feel of the Stage 2 while delivering a 15–20% higher torque capacity — making it an ideal choice for street-driven performance builds with aggressive power modifications.

The disc features a full-face, multi-friction configuration with carbon semi-metallic material on one side and Kevlar on the other, optimizing both grip and wear characteristics. The hub is double-sprung with spring cover reliefs for drivetrain flexibility, and all internal components are heat-treated for long-term strength and durability.

Key Features:

• Full-face multi-friction disc — carbon semi-metallic on one side, Kevlar on the other
• High-clamp pressure plate for increased torque holding capacity
• Double-sprung hub with spring cover reliefs for flexibility and vibration damping
• Heat-treated internal components for strength and durability
• 15–20% higher torque capacity over the standard Stage 2 clutch
• Retains Stage 2 drivability and engagement quality for daily usability
• Includes high-torque sprung hub and disc assembly, bearing, and tool kit

Intended Use: Street, Drag Racing, Road Racing, Rally, Autocross, Pulling, Drifting

The SM103H is designed, hand-built, and tested in the USA by SPEC Clutch — a trusted name in performance clutch systems across motorsport disciplines.