Spec Clutch SB074-2 Stage 4 Clutch Kit

The Spec SB074-2 Stage 4 Clutch Kit is the solid hub evolution of the Stage 3, engineered for high-demand performance driving applications. The assembly features a solid 8-rivet hub that is heat treated for exceptional strength and durability, delivering maximum torque transfer where it counts most.

This kit is available in a 3, 4, or 6 puck configuration, allowing drivers to tailor engagement characteristics to their specific needs. The 3-puck disc offers the lightest rotating mass, while the 6-puck provides the smoothest engagement and remains street drivable. The 4-puck configuration strikes an ideal balance between the two. Note that while the 6-puck version can be used on the street, the rigid solid hub design makes this kit best suited for performance and racing environments.

Key Features:

• Solid 8-rivet hub — heat treated for maximum strength and durability
• High clamp pressure plate for increased torque holding capacity
• Carbon-Graphite friction material for aggressive grip and fade resistance
• Available in 3, 4, or 6 puck disc configurations
• Includes bearing and installation tool kit

Ideal Applications:

• Drag Racing
• Road Racing
• Pulling
• Rallye
• Drift
• Autocross

The Spec Stage 4 Clutch Kit is purpose-built for drivers who demand the highest level of performance from their drivetrain. Its solid hub design and carbon-graphite friction material make it one of the most capable clutch solutions available for track and competition use.