Spec Clutch SC704 Stage 4 Carbon Semi-Metallic Puck Clutch Kit

The Spec Clutch SC704 Stage 4 Clutch Kit is a race-focused, solid hub clutch system engineered for heavily modified engines that demand maximum torque capacity, instantaneous engagement, and reduced rotating mass. As a solid hub evolution of the Stage 3, this kit is purpose-built for competition use and is not recommended for daily street driving due to its aggressive, rigid hub engagement characteristics.

The Stage 4 disc uses a carbon semi-metallic friction material in a puck-style configuration, offering outstanding heat resistance, high friction coefficient, and exceptional longevity under race conditions. The solid 8-rivet hub assembly is heat-treated for superior strength and durability, making it a reliable choice for sustained high-performance applications.

Puck Configuration Options:

• 3-Puck: Lightest rotating mass — ideal for applications where weight reduction is the top priority
• 4-Puck: Balanced compromise between low weight and engagement smoothness
• 6-Puck: Smoothest engagement of the three options; marginally more street-drivable while retaining race-level performance

Key Features:

• High-clamp pressure plate for maximum clamping force
• Carbon semi-metallic puck disc — available in 3, 4, or 6-puck configuration
• Solid 8-rivet rigid hub, heat-treated for strength and durability
• High-torque hub and carrier assembly
• Includes release bearing and installation tool kit
• SFI Approved

Recommended Motorsport Applications: Drag Racing, Road Racing, Drifting, Rallye, Pulling, Circle Track

Note: Stages 4 and above are intended for race use only. For street or street/strip applications, Spec Stages 1 through 3+ are recommended.