Spec Clutch SA874-3 Stage 4 Clutch Kit Carbon-Graphite Solid Hub

The SPEC SA874-3 Stage 4 Clutch Kit is a high-performance, solid hub clutch system engineered for drivers who demand maximum torque capacity and durability under extreme conditions. Building on the Stage 3 platform, the Stage 4 replaces the sprung hub with a solid 8-rivet hub assembly that is heat-treated for superior strength and longevity.

The kit is available in a 3, 4, or 6 puck configuration to suit your specific performance needs. The 3-puck disc offers the lightest rotational mass for the quickest response, while the 6-puck configuration provides the smoothest engagement and remains street drivable — though the rigid solid hub makes it less street-friendly for daily use. The 4-puck disc strikes a balanced compromise between engagement smoothness and performance aggression.

Key Features:

• Solid 8-rivet hub — heat-treated for maximum strength and durability
• High-clamp pressure plate — increased clamping force for higher torque applications
• Carbon-Graphite friction material — excellent heat resistance and consistent bite
• Available in 3, 4, or 6 puck disc configurations — choose for weight, feel, or a balance of both
• Includes bearing and installation tool kit — everything needed for a complete installation

Ideal Applications:

• Drag Racing
• Road Racing
• Rallye & Drift
• Pulling
• High-performance street use (6-puck only)

The SPEC Stage 4 is best suited for dedicated performance and competition builds where maximum torque transfer is the priority. The rigid hub design minimizes driveline slop and maximizes power delivery to the wheels, making it the go-to choice for serious motorsport applications.