Spec Clutch SC66MT3 Mini Twin X-Trim Multi-Disc Clutch and Flywheel Kit

The SPEC SC66MT3 Mini Twin X-Trim is a high-performance multi-disc clutch and flywheel assembly engineered for demanding street and motorsport applications. Designed to handle the rigors of drag racing, road racing, drifting, time attack, pulling, and rally driving, this kit delivers the torque capacity and durability that serious performance drivers require.

SPEC Mini Twin assemblies are available in a variety of clutch disc materials, flywheel materials, clamp loads, disc configurations, and diameters — each option tailored to match the specific demands of the intended driving environment. The X-Trim configuration uses a carbon composite, full-face disc with an unsprung hub, providing aggressive torque capacity while maintaining manageable street drivability.

Key Features:

• Multi-disc clutch and flywheel assembly designed for limited street, drag, and road race use
• Manufactured to an industry-leading .001-inch tolerance for perfect rotational properties and concentric actuation
• Optimizes balance, drivability, and clutch longevity
• Flywheel and track-spec hardware included in every kit
• Fully rebuildable by SPEC or the end user
• Replacement components and rebuild services always available
• Suitable for: street, drag, drift, road racing, time attack, pulling, autocross, and rallye

Every SPEC clutch kit and flywheel is SFI Approved, ensuring compliance with sanctioning body standards for competitive motorsport. The SC66MT3 is sold as a complete kit, making it a straightforward upgrade for high-horsepower builds that have outgrown a single-disc clutch setup.