Spec Clutch SA314 Stage 4 Performance Clutch Kit - Carbon Semi-Metallic Puck Disc

The Spec Clutch SA314 Stage 4 Clutch Kit is a high-performance, competition-grade clutch system engineered for heavily modified engines that demand maximum torque capacity, instantaneous engagement, and reduced rotating mass. This is a purpose-built racing clutch — not intended for street use — and is at home on the track, strip, or special stage.

The Stage 4 is a solid-hub evolution of the Stage 3 design. The disc features a solid 8-rivet hub that has been heat-treated for exceptional strength and durability, paired with a high-clamp pressure plate that delivers aggressive, direct power transfer. The carbon semi-metallic friction material is available in 3, 4, or 6-puck configurations — choose the 3-puck for the lightest rotating assembly or the 6-puck for the smoothest engagement of the puck options.

What's Included:

• High-clamp performance pressure plate
• Carbon semi-metallic puck friction disc (3, 4, or 6-puck configuration)
• High-torque solid rigid hub and carrier assembly
• Release bearing
• Installation tool kit

Key Features:

• Solid 8-rivet heat-treated hub for maximum strength and durability
• High-clamp pressure plate for aggressive torque holding capacity
• Carbon semi-metallic friction material for high torque capacity and consistent performance under race conditions
• Lightweight design reduces rotating mass for quicker throttle response
• Instantaneous engagement characteristics ideal for competitive motorsport
• Designed, hand-built, and tested in the U.S.A.

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

Note: The Stage 4 clutch kit is not recommended for street driving due to its aggressive, non-linear engagement characteristics. It is purpose-built for competition and track use only.