Spec Clutch SB34MT3 Mini Twin Multi-Disc Clutch Kit X-Trim

The SPEC SB34MT3 Mini Twin X-Trim is a high-performance multi-disc clutch and flywheel assembly engineered for limited street, drag race, road racing, drift, time attack, pulling, and rallye applications. The X-Trim designation identifies this unit's specific friction material and disc configuration within the Mini Twin lineup, optimized for the most demanding performance driving environments.

SPEC manufactures the Mini Twin assemblies to an industry-leading one thousandth of an inch (.001") tolerance, delivering perfect rotational properties and concentric actuation for optimized balance, drivability, and clutch life. This precision far exceeds the industry standard of .010", ensuring a perfectly flat bedding surface and true rotational balance at all RPM levels.

What's Included:

• Rebuildable multi-disc flywheel assembly
• Grade 10.9 bolt kit
• Bearings

Key Features:

• Multi-disc clutch design for significantly increased torque capacity over single-disc units
• Available in multiple clutch disc and flywheel materials, clamp loads, disc configurations, and diameters
• Fully rebuildable by SPEC or the end user — replacement components and rebuild services always available
• Manufactured to .001" tolerance for perfect rotational balance and concentric actuation
• SFI-approved clutch kit and flywheel
• Designed and manufactured in the USA

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

Installation Note: Unless using a new SPEC flywheel, the existing flywheel must be resurfaced prior to installation. A minimum 450-mile break-in period (primarily city/stop-and-go driving) is required before full-throttle engagement, drag launching, or speed shifting.