Spec Clutch SA81MTR Mini Twin Multi-Disc Clutch Kit R-Trim with Flywheel

The SPEC SA81MTR Mini Twin R-Trim is a high-performance multi-disc clutch and flywheel assembly engineered for drivers who demand more than a single-disc clutch can deliver. Rated to handle up to 800 lb-ft of torque, this twin-disc system is purpose-built for limited street, drag racing, road racing, time attack, drift, pulling, and rallye applications.

Key Features:

• Twin-disc (multi-plate) design — two friction discs provide dramatically higher torque capacity compared to a conventional single-disc clutch
• 800 lb-ft torque capacity — suitable for heavily modified and forced-induction builds
• R-Trim friction material — optimized for street, drag, pulling, and autocross use cases
• Multiple configuration options — available in varying clutch disc materials, flywheel materials, clamp loads, disc configurations, and diameters to suit specific driving demands
• Industry-leading .001" manufacturing tolerance — precision CNC machining delivers perfect rotational balance and concentric actuation for improved drivability and clutch life
• SFI approved — every SPEC clutch kit and flywheel carries SFI certification
• User-rebuildable — the assembly can be rebuilt by SPEC or the end user; replacement components and rebuild services are always available
• Includes slave cylinder where applicable

Intended Driving Applications: Street, Drag, Pulling, Autocross, Drift, Road Racing, Time Attack, Rallye

SPEC manufactures its clutches and flywheels in-house to exacting standards, offering one of the broadest performance lineups in the industry — from Stage 1 street kits through full race multi-disc assemblies. The Mini Twin series bridges the gap between single-disc performance kits and the extreme-duty Super Twin line, making it an ideal choice for high-horsepower builds that still see limited street use.