SPEC ST623H Stage 2+ Performance Clutch Kit

The SPEC ST623H Stage 2+ Clutch Kit is engineered for modified engines that demand more torque capacity than the standard Stage 2 can deliver, while still preserving everyday street drivability. Bridging the gap between the Stage 2 and Stage 3, this kit offers the familiar engagement feel of the Stage 2 with a 15–20% higher torque capacity.

Disc & Friction Technology:

• Multi-friction disc in a full-faced configuration with carbon semi-metallic material on one side and Kevlar® on the other for optimal grip and wear resistance
• High-clamp pressure plate for increased clamping force on modified, higher-torque applications
• Double-sprung hub with spring cover reliefs for pedal feel flexibility and smooth engagement
• Heat-treated hub components for long-term strength and durability

Kit Contents:

• High-clamp performance pressure plate
• Composite multi-friction carbon-Kevlar clutch disc
• High-torque sprung hub and disc assembly
• Release bearing and installation tool kit

Recommended Driving Applications:

• Street performance and daily driving
• Drag racing
• Road racing and rallye
• Autocross
• Pulling

Every SPEC clutch kit and flywheel is SFI approved, and all components are designed, tested, and manufactured in-house in SPEC's USA facility to ensure precise tolerances and consistent performance.