Spec Clutch SF524-3 Stage 4 Performance Clutch Kit - 3-Puck

The SPEC SF524-3 Stage 4 Clutch Kit is a high-performance, solid hub upgrade designed for motorsport and high-demand driving applications. Building on the proven Stage 3 platform, the Stage 4 steps up to a solid 8-rivet hub with a fully heat-treated assembly for exceptional strength and durability under extreme load.

This kit is offered in 3, 4, or 6-puck disc configurations to suit a range of performance needs. The 3-puck disc provides the lightest rotating mass for maximum acceleration response, the 6-puck delivers the smoothest engagement of the three options (and remains street drivable), and the 4-puck strikes an optimal balance between the two. Due to the rigid solid hub design, this kit is not considered street-friendly despite being technically street drivable in the 6-puck configuration. It is best suited for drag racing, road racing, rally, pulling, and drift applications.

Key Features:

• High-clamp pressure plate for increased clamping force
• Carbon-graphite friction material for durability and high torque capacity
• Solid 8-rivet hub — heat-treated for strength under extreme conditions
• Available in 3-puck, 4-puck, or 6-puck disc configurations
• Includes pilot bearing and installation tool kit

The SPEC Stage 4 kit is ideal for purpose-built race vehicles and high-powered builds that demand maximum torque transfer and rigid drivetrain response.