Spec Clutch SS954 Stage 4 Performance Clutch Kit - Carbon-Graphite 6-Paddle

The Spec Clutch SS954 Stage 4 Clutch Kit is a high-performance racing clutch designed for heavily modified engines demanding maximum torque capacity and instantaneous engagement. Built as a solid-hub evolution of the Stage 3, this kit is purpose-built for competitive motorsports applications where raw performance takes priority over everyday drivability.

At its core, the Stage 4 features a solid 8-rivet hub assembly that is heat-treated for superior strength and long-term durability under racing conditions. It is paired with a high-clamp pressure plate and carbon-graphite friction material to deliver aggressive, reliable grip under high-load scenarios. The kit is available in 3-puck, 4-puck, and 6-puck configurations to suit different racing priorities — choose the 3-puck for the lightest possible rotating assembly, the 6-puck for the smoothest engagement among Stage 4 options, or the 4-puck as a balanced compromise between weight and engagement feel.

Key Features:

• Solid 8-rivet hub — heat-treated for maximum strength and durability
• High-clamp pressure plate for increased clamping force on modified engines
• Carbon-graphite friction disc — available in 3, 4, or 6-puck configurations
• 23-spline input shaft compatibility (1.031 in. diameter)
• Bearing and tool kit included for complete installation
• Designed and manufactured in the USA

Intended Use: Drag Racing, Road Racing, Drifting, Rallye, Pulling, Circle Track

Note: The Stage 4 is a race-only clutch. While marginally street-drivable in 6-puck configuration, the rigid solid hub produces harsh engagement characteristics that make it unsuitable for regular street driving. This kit is recommended for competition use only.