Spec Clutch SN404 Stage 4 Performance Clutch Kit - Carbon Composite, 4-Paddle

The Spec Clutch SN404 Stage 4 Clutch Kit is a high-performance, race-oriented clutch system engineered for heavily modified engines that demand maximum torque capacity and instantaneous engagement. As the solid hub evolution of the Stage 3, this kit is purpose-built for competitive motorsports applications where performance takes priority over street drivability.

Key Features:

• Solid 8-rivet hub — heat-treated for exceptional strength and long-term durability under extreme loads
• High-clamp performance pressure plate — delivers aggressive clamping force for maximum power transfer
• Carbon-graphite friction material — provides high torque capacity with rapid, positive engagement
• Available in 3, 4, or 6-puck configurations — choose 3-puck for the lightest weight, 6-puck for the smoothest engagement, or 4-puck for a balance of both
• 18-spline input shaft compatibility — 0.813 in. input shaft diameter
• Complete kit — includes high-torque solid hub and disc assembly, bearing, and tool kit

Intended Use:

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

Note: The Stage 4 is not recommended for daily street use due to its rigid solid hub design and aggressive engagement characteristics. The 6-puck configuration offers the most street-drivable behavior of the available options. All Spec clutch products are designed, hand-built, and tested in the U.S.A.