Spec Clutch SY004-2 Stage 4 Carbon-Graphite Puck Clutch Kit

The Spec Clutch SY004-2 Stage 4 Clutch Kit is a high-performance, race-oriented clutch designed for drivers who demand maximum torque capacity and aggressive engagement. Built as a solid hub evolution of the Stage 3, this kit features a solid 8-rivet hub with a heat-treated disc assembly engineered for exceptional strength and long-term durability under demanding conditions.

The Stage 4 is available in 3, 4, or 6 puck configurations using carbon-graphite friction material, allowing drivers to tailor engagement characteristics to their specific application. The 3-puck disc offers the lightest rotational mass, the 6-puck provides 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 rigid solid hub design makes this kit best suited for dedicated performance and race use.

Key Features:

• Solid 8-rivet hub — heat-treated for superior strength and durability
• Carbon-graphite friction material — high-torque capacity with aggressive bite
• High clamp pressure plate — maximizes clamping force for performance applications
• Available in 3, 4, or 6 puck configurations — selectable engagement feel and rotating mass
• Includes bearing and installation tool kit — everything needed for a complete clutch service
• SFI approved — meets stringent safety standards for sanctioned racing

The Spec Stage 4 is ideally suited for drag racing, road racing, rallye, pulling, and drift applications where maximum torque transfer and reliability are critical. This is a race-level clutch kit and is not recommended as a primary daily-driver solution due to its solid hub design.