Spec Clutch SC074-2 Stage 4 Clutch Kit 4-Puck Carbon Semi-Metallic

The Spec Clutch SC074-2 Stage 4 Clutch Kit is a race-grade clutch system engineered for heavily modified, high-output engines demanding maximum torque capacity and instantaneous engagement. This is a solid hub version of the Stage 3 clutch, purpose-built for competitive motorsports applications where raw performance takes priority over street manners.

This kit features the 4-puck carbon semi-metallic disc configuration — the ideal balance between the lightweight 3-puck and the smoother-engaging 6-puck, offering a strong middle ground for performance driving. The rigid solid hub uses an 8-rivet construction and is heat-treated for exceptional strength and long-term durability under extreme racing loads.

Key Features:

• High-clamp performance pressure plate for maximum clamping force
• 4-puck carbon semi-metallic friction disc for high torque capacity and quick engagement
• Solid 8-rivet high-torque rigid hub and carrier assembly, heat-treated for strength and durability
• Instantaneous clutch engagement suited for racing environments
• Bearing and tool kit included
• Not recommended for street use due to harsh engagement characteristics of the rigid hub

Intended Driving Disciplines: Drag Racing, Road Racing, Drifting, Rallye, Pulling, Circle Track

The Spec Stage 4 is classified as a race-only clutch. Stages 1 through 3+ are recommended for street or street/strip use — the Stage 4 is built for competitors who need every advantage on the track.