Spec Clutch SN23ST Super Twin ST-Trim Multi-Disc Clutch Kit with Billet Flywheel

The SPEC SN23ST Super Twin ST-Trim Multi-Disc Clutch Kit is an SFI-approved, high-performance twin-disc clutch system engineered for street and track applications handling 700–1,125 ft-lbs of torque. Designed for extreme-power builds including drag, drift, road racing, time attack, rally, and pulling, this kit delivers near-stock drivability without sacrificing the holding power demanded by serious performance builds.

Key Features:

• Rated for up to 1,125 ft-lbs of torque — ideal for high-output forced-induction engines
• Constructed from aircraft-grade aluminum and high-carbon billet steel machined to an industry-leading .001-inch tolerance for perfect balance and precise actuation
• Friction provided by dampened, full-faced carbon graphite discs for smooth, consistent engagement
• No shimming or setup required — true bolt-in installation right out of the box
• All-billet construction delivers a smooth, quiet operating character with maintenance-free performance
• Fully rebuildable by SPEC or the end user; replacement components and rebuild services are always available
• Includes billet flywheel, billet hydraulic release bearing/slave assembly, stainless steel hydraulic line, and all installation hardware
• SFI-certified for sanctioned racing environments
• Organic, fiber, and full-metallic friction disc options also available

Suitable driving applications include street, drag racing, drifting, road racing, time attack, pulling, and rally. The SPEC Super Twin platform is built for the long haul — precision-manufactured in the USA to the tightest tolerances in the industry.