Spec Clutch SB264 Stage 4 Performance Clutch Kit - Carbon Semi-Metallic

The Spec Clutch SB264 Stage 4 Clutch Kit is a race-grade performance clutch engineered for heavily modified engines that demand maximum torque capacity, instantaneous engagement, and reduced rotational mass. Purpose-built for competition use, this kit steps up from the Stage 3 by replacing the sprung hub with a solid 8-rivet rigid hub assembly that is heat-treated for exceptional strength and durability.

The Stage 4 features a high-clamp pressure plate paired with a carbon semi-metallic friction disc, available in 3-puck, 4-puck, or 6-puck configurations to match your specific performance needs. The 3-puck offers the lightest rotating weight, the 6-puck delivers the smoothest engagement of the puck options, and the 4-puck strikes an ideal balance between the two.

Key Features:

• Solid 8-rivet rigid hub — heat-treated for strength and durability
• High-clamp performance pressure plate for maximum torque transfer
• Carbon semi-metallic friction material for superior heat resistance and torque capacity
• Available in 3, 4, or 6-puck disc configurations
• SFI approved clutch kit and flywheel
• Includes pressure plate, disc, release bearing, and installation tool kit

Recommended Driving Applications: Drag Racing, Road Racing, Drift, Rallye, Pulling, Circle Track

Important Note: The Stage 4 is a race-only clutch. While technically drivable in the 6-puck configuration, the rigid hub design results in harsh engagement characteristics that are not suitable for street driving. SPEC Stages 1–3+ are recommended for street or street/strip use.