Spec Clutch SM48MT2 Multi-Disc Mini Twin Clutch Kit with CarbonSteel Flywheel - D-Trim

The SPEC SM48MT2 Mini Twin Multi-Disc Clutch Kit is a high-performance dual-disc clutch and flywheel assembly engineered for drivers who demand serious holding power across a range of motorsport and high-performance street applications. This kit features the D-Trim disc configuration and includes a CarbonSteel flywheel, combining the engagement precision of a twin-disc setup with the durability of a carbon steel friction surface.

Key Features:

• Multi-disc (Mini Twin) clutch and flywheel assembly for maximum torque capacity in a compact package
• D-Trim disc configuration for aggressive, performance-oriented engagement
• Includes CarbonSteel flywheel for optimal friction surface and inertia balance
• Manufactured to an industry-leading 0.001-inch tolerance for perfect rotational properties and concentric actuation
• Optimizes balance, drivability, and clutch longevity
• Available in multiple clutch disc and flywheel materials, clamp loads, disc configurations, and diameters
• SFI-approved clutch and flywheel components
• Fully rebuildable by SPEC or the end user — replacement components and rebuild services available

Intended Use:

• Limited street driving
• Drag racing
• Road racing and time attack
• Drift
• Autocross and pulling
• Rallye

SPEC flywheels are CNC-machined to a 0.001-inch tolerance — ten times tighter than the industry standard of 0.010 inches — ensuring perfect balance and a flat, true friction surface for consistent clutch bedding. The CarbonSteel flywheel included in this kit provides a medium-weight inertia option well suited to performance driving environments where rotating mass management is critical.

Installation Note: If not using a new SPEC-supplied flywheel, the existing flywheel must be resurfaced before installation. A break-in period of at least 450 miles of primarily city/stop-and-go driving is required before full-throttle engagement or drag launching.