Spec Clutch SB60ST-2 Super Twin Multiplate Clutch Kit ST-Trim

The SPEC SB60ST-2 Super Twin Clutch Kit (ST-Trim) is a high-performance twin-disc clutch and flywheel system engineered for street and track vehicles producing extreme horsepower and torque. Rated to handle 700–1,500 ft-lbs of torque, this multiplate assembly delivers near-stock drivability without sacrificing the clamping capacity demanded by heavily modified and forced-induction builds.

Built entirely from billet materials, the Super Twin features aircraft-grade aluminum and high-carbon billet steel components machined to an industry-leading .001-inch tolerance for perfect rotational balance and precise clutch actuation. Despite its race-capable design, the all-billet construction keeps operation smooth and quiet under all driving conditions.

Key Features:

• Twin-disc (multiplate) design rated for 700–1,500 ft-lbs torque capacity
• Aircraft-grade aluminum and high-carbon billet steel construction
• Machined to .001-inch tolerance for perfect balance and actuation
• Dampened, full-faced carbon graphite friction discs standard; organic, fiber, and full metallic disc options available
• Near-stock drivability with no shimming or setup required — true bolt-in installation
• Maintenance-free operation with user-rebuildable design
• Replacement components and professional rebuild services available from SPEC
• Billet steel flywheel included — minimizes gear noise for near-stock NVH
• Track-spec hardware included in every kit
• SFI approved

Suitable Driving Applications: Street, drag racing, drifting, road racing, time attack, pulling, and rallye.

The SPEC Super Twin ST-Trim is a complete, ready-to-install clutch system. Its no-shimming bolt-in design simplifies installation while the rebuildable architecture and available replacement parts ensure long-term serviceability for competition and high-performance street use.