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

The SPEC SD08ST Super Twin ST-Trim is a high-performance multi-disc clutch and flywheel kit engineered for street and track use in vehicles producing extreme horsepower and torque. Rated to handle 700 to 1,500 ft-lbs of torque, this twin-disc assembly delivers the muscle needed for the most demanding performance builds without sacrificing everyday drivability.

Built with an all-billet construction using aircraft-grade aluminum and high-carbon billet steel, each Super Twin assembly is precision-milled to an industry-leading .001-inch tolerance for perfect balance and smooth, consistent actuation. Despite its extreme capability, the Super Twin delivers near-stock pedal feel and engagement character, making it equally at home during a daily commute or a full-throttle track session.

Key Features:

• Torque capacity rated from 700 to 1,500 ft-lbs — suitable for heavily modified and forced-induction applications
• All-billet construction with aircraft-grade aluminum and high-carbon billet steel
• Precision machined to .001-inch tolerance for optimal balance and actuation
• Dampened, full-faced carbon-graphite friction discs for smooth, consistent engagement
• Near-stock drivability with no shimming or setup required — true bolt-in installation
• Maintenance-free operation with infinite rebuildability by SPEC or the end user
• Replacement components and rebuild services always available
• Organic, fiber, and full-metallic friction disc options available
• Flywheel and track-spec hardware included in every kit
• SFI approved

Intended Use: Street, drag, drift, road racing, time attack, pulling, and rallye.

The SPEC Super Twin ST-Trim is a complete, ready-to-install solution for performance builds that have outgrown single-disc clutch options. With its rebuildable design and premium materials, it offers long service life and consistent performance across all types of high-demand driving.