Spec Clutch SB531 Stage Performance Clutch Kit - 1 Carbon Kevlar Organic

The SPEC SB531 Stage 1 Clutch Kit is engineered for drivers who demand more from their drivetrain without sacrificing daily drivability. Featuring a carbon kevlar-based, high-performance organic friction lining, this clutch delivers smooth, predictable engagement with long service life — making it an ideal upgrade for performance street driving and a wide range of motorsport disciplines.

The friction disc uses an integrally bonded steel backing that provides exceptional structural integrity under high clamp loads and elevated operating temperatures. The double-sprung hub design incorporates spring cover reliefs to absorb driveline shock and reduce NVH, while heat-treated hub components ensure lasting strength and durability through aggressive use cycles.

Key Features:

• Carbon Kevlar organic lining — smooth engagement with excellent wear resistance
• Steel-backed friction disc — reinforced for strength under high clamp loads and heat
• High-clamp pressure plate — increased clamping force for improved torque transfer
• Double-sprung hub assembly — spring cover reliefs for driveline flexibility and reduced shock
• Heat-treated hub components — enhanced strength and long-term durability
• Multi-compound woven organic material — consistent performance across operating conditions
• Includes bearing and alignment tool kit — everything needed for a complete installation

Recommended Driving Applications: Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

The SPEC Stage 1 kit is best suited for street use and many track or off-road environments where a balance of performance and daily drivability is required. Each kit includes the pressure plate, disc, pilot bearing, release bearing, and alignment tool.