Spec Clutch SF234-2 Stage 4 Performance Clutch Kit Carbon-Graphite 6-Puck

The Spec Clutch SF234-2 Stage 4 Clutch Kit is a high-torque, race-grade clutch system built for drivers who demand maximum performance from their drivetrain. Designed and hand-built in the USA, this kit steps up from the Stage 3 by replacing the sprung hub with a rigid solid 8-rivet hub assembly that is heat-treated for exceptional strength and durability under sustained high-load conditions.

The SF234-2 uses a carbon-graphite friction material and is available in a 3, 4, or 6-puck disc configuration, allowing you to tailor performance to your specific application. The 3-puck disc offers the lightest rotating mass for the quickest response, the 6-puck delivers the smoothest engagement of the three options, and the 4-puck strikes a balance between the two. While the 6-puck configuration is technically street-drivable, the solid rigid hub makes this kit best suited to dedicated performance and motorsport use.

Key Features:

• Solid 8-rivet hub — heat-treated for maximum strength and durability
• Carbon-graphite friction material — high friction coefficient for aggressive torque transfer
• High-clamp pressure plate — increases clamping force over stock
• Available in 3, 4, or 6-puck disc configurations — select for weight, engagement feel, or balance
• Includes bearing and installation tool kit
• Designed and manufactured in the U.S.A.

The Stage 4 kit is ideally suited for drag racing, road racing, rally, drifting, and pulling applications. It represents SPEC's entry into dedicated race-level clutch kits, offering the rigid engagement and torque capacity that competitive motorsport demands.