Spec Clutch SB075-2 Stage 5 Full-Metallic Performance Clutch Kit

The Spec Clutch SB075-2 Stage 5 Clutch Kit is SPEC's most aggressive single-disc clutch offering, engineered for drivers who demand maximum grip and instant engagement. Built around a full-metallic friction disc with the highest available friction coefficient, this kit delivers uncompromising power transfer for extreme performance applications. While technically street-drivable, the Stage 5 is purpose-built for the track — expect aggressive engagement characteristics that prioritize raw performance over daily comfort.

The disc assembly uses a solid 12-rivet hub construction and is heat-treated throughout for exceptional strength and long-term durability under sustained high-load conditions. A high-clamp pressure plate completes the package, ensuring the disc stays firmly engaged even under extreme torque demands. Everything you need for installation is included in the kit.

Key Features:

• Full-metallic friction disc with maximum available friction coefficient
• High-clamp performance pressure plate for superior clamping force
• Solid 12-rivet hub and disc assembly for maximum torque transfer
• Heat-treated assembly for enhanced strength and durability
• Includes release bearing and installation tool kit
• SFI-approved construction

Ideal Driving Applications:

• Extreme street / high-horsepower builds
• Drag racing
• Pulling competitions
• Autocross

The SPEC Stage 5 sits at the top of SPEC's single-disc clutch lineup, above the Stage 3+ and Stage 4, and is the go-to choice for builds where maximum torque capacity and instant, aggressive engagement are the priority over street manners.