Spec Clutch SM10MTR Mini Twin Multi-Disc Clutch and Flywheel Kit R-Trim

The SPEC SM10MTR Mini Twin R-Trim is a high-performance multi-disc clutch and flywheel assembly engineered for limited street, drag race, and road race applications. Designed for drivers who demand more than a single-disc clutch can deliver, the Mini Twin platform delivers impressive torque capacity — rated up to 800 ft-lbs — while maintaining manageable drivability for street and competition use.

The R-Trim designation reflects SPEC's dual-friction disc configuration, combining carbon semi-metallic and Kevlar friction surfaces in a full-faced layout. This setup bridges the gap between aggressive race engagement and everyday streetability, delivering a 15–20% higher torque capacity over standard stage configurations without sacrificing pedal feel or drivability.

Key Features:

• Multi-disc clutch and flywheel assembly rated up to 800 ft-lbs torque at the flywheel
• R-Trim dual-friction disc combines carbon semi-metallic and Kevlar friction materials
• Kit includes rebuildable billet flywheel, 10.9 bolt kit, and bearings
• Manufactured to an industry-leading .001-inch tolerance for perfect rotational balance and concentric actuation
• Rebuildable by SPEC or the end user — replacement components and rebuild services available
• SFI-approved flywheel with replaceable steel friction plate
• Optimizes balance, drivability, and clutch longevity

Intended Driving Applications:

• Limited street use
• Drag racing
• Drift
• Road racing and time attack
• Pulling
• Rallye and autocross

SPEC manufactures its Mini Twin assemblies in various clutch disc and flywheel materials, clamp loads, disc configurations, and diameters to match the specific demands of each driving environment. With all-billet construction and precision tolerances unmatched in the industry, the SM10MTR delivers the ideal balance of performance, longevity, and versatility for high-powered street and race builds.