Spec Clutch SM584 Stage 4 Performance Clutch Kit

The Spec Clutch SM584 Stage 4 Clutch Kit is engineered for heavily modified, high-output engines where maximum torque capacity, instantaneous engagement, and reduced rotating mass are the top priorities. This is a purpose-built competition clutch designed for drivers who demand uncompromising performance over street comfort.

The Stage 4 is a solid hub variant of the Stage 3 design, featuring a solid 8-rivet hub that is heat-treated for superior strength and durability under extreme load. A high-clamp pressure plate works in conjunction with a carbon semi-metallic friction disc available in 3, 4, or 6-puck configurations, allowing tuners to dial in the ideal balance of torque capacity and rotational inertia for their specific application.

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic friction disc (3, 4, or 6-puck configuration)
• Solid 8-rivet heat-treated hub and carrier assembly
• Release bearing
• Installation tool kit

Recommended Motorsport Applications:

• Drag Racing
• Drifting
• Road Racing
• Rallye
• Pulling
• Circle Track

Please Note: The Stage 4 clutch features a harsh, instantaneous engagement characteristic that makes it not recommended for street use. This kit is intended for dedicated competition and track applications only.