Spec Clutch SB534-2 Stage 4 Performance Clutch Kit - Carbon-Graphite Solid Hub

The Spec Clutch SB534-2 Stage 4 Clutch Kit is a high-performance, race-focused clutch system built for maximum power transfer and durability. As the solid hub evolution of the Stage 3, this kit features a solid 8-rivet hub with a heat-treated assembly designed to withstand the demands of serious performance driving and motorsport competition.

The SB534-2 features a non-SAC mechanism pressure plate, which departs from the original OEM design to deliver a lighter rotating assembly, higher RPM capability, and increased clamp load levels. This kit holds up to 580 lb-ft of torque at the flywheel, making it suitable for heavily modified builds. A SPEC billet rebuildable flywheel (sold separately) is required for installation.

Available in 3, 4, or 6 puck configurations to suit your specific driving needs — use the 3-puck disc for the lightest rotating mass, the 6-puck for the smoothest engagement (also the most street-drivable option in this lineup), or the 4-puck as a balanced compromise between the two. Note that due to the rigid hub design, this kit is not considered street-friendly and is best suited for performance and racing applications.

Key Features:

• Solid 8-rivet hub — heat-treated for strength and durability
• High clamp pressure plate — increased clamping force over OEM and lower stages
• Carbon-graphite friction material — excellent heat resistance and torque capacity
• Available in 3, 4, or 6 puck disc configurations — tunable engagement feel
• Non-SAC mechanism pressure plate — lighter assembly, higher RPM capability
• 580 lb-ft torque capacity — built for high-output applications
• Includes bearing and install tool kit

Ideal Applications:

• Drag Racing
• Road Racing
• Rallye
• Drift
• Pulling

This is a built-to-order kit. A SPEC billet single-mass flywheel (SMFW) is required for installation — this kit is not compatible with the OEM dual-mass flywheel (DMFW). Cross-reference part numbers: SPC-SB534-2, SPC.SB534.2, SPCSB5342.