Spec Clutch SF874 Stage 4 Performance Clutch Kit

The Spec Clutch SF874 Stage 4 Clutch Kit is a race-focused performance clutch engineered for heavily modified engines where maximum torque capacity, instantaneous engagement, and reduced rotating mass are the top priorities. This kit steps up from the Stage 3 by utilizing a solid, heat-treated 8-rivet hub assembly in place of a sprung hub, delivering a direct and aggressive power transfer that serious competition builds demand.

The Stage 4 features a high-clamp pressure plate paired with a carbon semi-metallic friction disc available in 3, 4, or 6-puck configurations, allowing tuners to dial in the engagement characteristics best suited to their application. The rigid hub and carrier assembly provide superior durability under high-load, high-RPM conditions. Rated for up to 695 ft-lbs of torque capacity, this kit is built for the most demanding race environments.

Important Note: Due to the rigid hub design and aggressive engagement characteristics, the Stage 4 is not recommended for street use. It is intended for dedicated race vehicles only.

Ideal Driving Applications:

• Drag Racing
• Drift Competition
• Road Racing
• Rally Racing
• Pulling
• Circle Track

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic puck-style clutch disc (3, 4, or 6-puck)
• Solid rigid hub and carrier assembly
• Throwout / release bearing
• Alignment tool