Spec Clutch SL55SST Super Twin SS-Trim Multiplate Clutch Kit

The SPEC SL55SST Super Twin SS-Trim Multiplate Clutch Kit is engineered for high-performance street and track applications demanding extreme torque capacity. Rated to handle 700–1,500 ft-lbs of torque, this twin-disc assembly delivers the holding power needed for drag racing, road racing, drifting, time attack, rallying, and pulling events — all while maintaining near-stock daily drivability.

Designed and hand-built in the U.S.A., the Super Twin features full all-billet construction for smooth, quiet operation. The assembly is precision-machined from aircraft-grade aluminum and high-carbon billet steel, milled to an industry-leading .001-inch tolerance for perfect balance and consistent actuation under load.

Key Features:

• Torque capacity: 700–1,500 ft-lbs — ideal for heavily modified and forced-induction builds
• SS-Trim configuration with dampened, full-faced carbon graphite friction discs
• No shimming or setup required — true bolt-in installation
• Maintenance-free operation with all-billet aluminum and steel construction
• User-rebuildable design; replacement components and rebuild services available directly from SPEC
• Friction disc options available: organic, fiber, and full metallic
• Complete kit includes flywheel and track-spec hardware
• SFI approved
• Designed, hand-built, and tested in the U.S.A.

Suitable for street, drag, drift, road racing, time attack, pulling, and rallye use, the SPEC Super Twin SS-Trim kit offers a no-compromise solution for builds that have outgrown conventional single-disc clutch systems.