Spec Clutch SC364-3 Stage 4 Carbon-Graphite Clutch Kit

The Spec Clutch SC364-3 Stage 4 Clutch Kit is a high-performance, solid-hub clutch system built for drivers who demand maximum power transfer and durability under extreme conditions. Engineered as the solid-hub evolution of the Stage 3, this kit is purpose-built for drag racing, road racing, rally, pulling, and drift applications where uncompromising performance is required.

Solid Hub Design: The Stage 4 features a rigid, solid 8-rivet hub that eliminates the flex found in sprung-hub designs, delivering direct and aggressive power transfer. The entire assembly is heat-treated for superior strength and long-term durability under high-load conditions.

Puck Configuration Options: The SC364-3 is a 3-puck configuration, offering the lightest possible rotating mass for applications where minimum weight is the top priority. For reference, a 4-puck version provides a balance between weight and engagement smoothness, while a 6-puck configuration delivers the smoothest engagement among Stage 4 variants and is the only puck count considered street-drivable — though the rigid hub means none of the Stage 4 variants are considered street-friendly for daily use.

Key Features:

• Solid 8-rivet rigid hub for maximum power transfer and direct engagement
• Carbon-Graphite friction material for high friction coefficient and heat resistance
• High-clamp pressure plate for increased clamping force and torque capacity
• Heat-treated hub and disc assembly for strength and long-term durability
• Bearing and tool kit included
• Available in 3, 4, or 6-puck configurations

Ideal Applications:

• Drag Racing
• Road Racing
• Rally / Rallycross
• Pulling
• Drift

Note: The flywheel surface must be resurfaced prior to installation unless using a new SPEC billet flywheel. A minimum 450-mile break-in period under city and stop-and-go driving conditions is required before full-throttle engagement or launch use.