Spec Clutch ST803H Stage 2 Plus Performance Clutch Kit

The SPEC ST803H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can handle. Bridging the gap between the Stage 2 and Stage 3, this kit delivers 15–20% higher torque capacity while preserving the smooth, streetable engagement feel that Stage 2 is known for — making it an ideal choice for high-performance builds that see both daily street use and weekend competition.

The multi-friction disc features a full-faced, composite construction with carbon semi-metallic material on one side and Kevlar on the other, optimizing holding power and wear life across a wide range of driving conditions. The double-sprung hub includes spring cover reliefs for added flexibility, while heat-treated internal components ensure long-term strength and durability under demanding loads.

Key Features:

• High-clamp pressure plate for increased clamping force
• Full-faced multi-friction disc — carbon semi-metallic / Kevlar composite construction
• Double-sprung hub with spring cover reliefs for flexibility
• Heat-treated hub components for enhanced strength and durability
• 15–20% higher torque capacity vs. SPEC Stage 2
• Bearing and tool kit included
• Designed, hand-built, and tested in the U.S.A.

Intended Use: Street, Drag, Road Race, Rally, Pulling, Autocross, Drift