Spec Clutch SZ364 Stage 4 Clutch Kit

The Spec SZ364 Stage 4 Clutch Kit is a high-performance racing clutch engineered for heavily modified engines demanding maximum torque capacity and instantaneous engagement. This is the solid hub evolution of SPEC's Stage 3, built for drivers who prioritize power transfer and responsiveness over everyday street comfort.

At the heart of this kit is a solid 8-rivet hub that is heat-treated for enhanced strength and durability under extreme loads. The carbon semi-metallic friction disc is available in 3, 4, or 6-puck configurations, allowing you to tailor the setup to your specific performance goals—the 3-puck offers the lightest rotating mass, the 6-puck delivers the smoothest engagement among the puck options, and the 4-puck strikes a balance between the two.

Key Features:

• Solid 8-rivet hub construction, heat-treated for strength and durability
• High-clamp performance pressure plate for maximum clamping force
• Carbon semi-metallic friction material for aggressive torque handling
• Available in 3, 4, or 6-puck disc configurations
• Rigid hub carrier assembly for direct, instantaneous power transfer
• Includes bearing and installation tool kit

Intended Use: Drag Racing, Drift, Road Racing, Rallye, Pulling, Circle Track

Important Note: Due to the rigid hub design, the Stage 4 is not recommended for street use. The flywheel must be resurfaced (or replaced) prior to installation, and the clutch requires a proper break-in period of at least 450 miles of city/stop-and-go driving before full-throttle or aggressive engagement.