Spec Clutch SF994 Stage 4 Performance Clutch Kit

The Spec Clutch SF994 Stage 4 Clutch Kit is a competition-grade clutch system engineered for heavily modified engines demanding maximum torque capacity, instantaneous engagement, and minimal rotating mass. Built for drivers who push their powertrain to the limit on the track, this kit is not intended for daily street use due to its aggressive, rigid engagement characteristics.

The Stage 4 is the solid-hub evolution of the SPEC Stage 3 platform. The high-clamp pressure plate works in conjunction with a carbon semi-metallic friction disc available in 3, 4, or 6-puck configurations to suit different performance priorities. The solid hub features eight heat-treated rivets for exceptional strength and durability under race conditions.

Key Features:

• High-clamp pressure plate for maximum clamping force and torque transfer
• Carbon semi-metallic friction disc available in 3-puck, 4-puck, or 6-puck configurations
• Solid 8-rivet hub assembly — heat-treated for strength and durability
• Instantaneous engagement ideal for drag racing, drifting, and road racing
• Lightweight design reduces rotating mass for quicker throttle response
• Complete kit includes pressure plate, disc, release bearing, and installation tool kit
• 3-puck offers the lightest option; 6-puck provides the smoothest engagement; 4-puck delivers a balance of both

Intended Applications: Drag Racing, Drifting, Road Racing, Rally, Pulling, Circle Track

Note: Due to the rigid solid hub design, this clutch is not street-friendly. It is intended for race and track use only where aggressive, instantaneous clutch engagement is required.