Spec Clutch SD08ST-3 Super Twin ST-Trim Multi-Disc Clutch and Flywheel Kit

The SPEC SD08ST-3 Super Twin ST-Trim Multi-Disc Clutch Kit is engineered for street and track applications demanding extreme power handling, with a torque capacity range of 700 to 1,500 ft-lbs. Despite its race-bred capability, this twin-disc system delivers near-stock drivability — making it equally at home on a daily driver as it is on a competition vehicle.

Built entirely from billet materials, the Super Twin is precision-machined from aircraft-grade aluminum and high-carbon billet steel, held to an industry-leading .001-inch tolerance for exceptional balance and actuation consistency. The result is a clutch assembly that is remarkably smooth and quiet for its performance class.

Key Features:

• Torque capacity: 700–1,500 ft-lbs — ideal for heavily modified and forced-induction builds
• Aircraft-grade aluminum and high-carbon billet steel construction machined to .001-inch tolerance
• Dampened, full-faced carbon graphite friction discs for consistent, controlled engagement
• ST-Trim designation — carbon composite, full-face/sprung hub disc configuration
• No shimming or setup required — true bolt-in installation
• Maintenance-free operation under normal use conditions
• Fully rebuildable by SPEC or the end user; replacement components and rebuild services are available
• Flywheel and track-spec hardware included in every kit
• Organic, fiber, and full-metallic friction disc options also available
• SFI Approved

The SPEC Super Twin is suited for the full spectrum of performance driving disciplines, including street, drag, drift, road racing, time attack, pulling, and rallye. The rebuildable design and available replacement components ensure long-term serviceability and a lower total cost of ownership for serious performance enthusiasts.