Spec Clutch SB55ST Super Twin ST-Trim Disc Clutch Kit

The Spec Clutch SB55ST Super Twin ST-Trim is a high-performance twin disc clutch kit engineered for BMW enthusiasts pushing extreme power levels. This ST-Trim configuration holds up to 1,470 lb-ft of torque at the flywheel, making it ideal for heavily modified street cars and dedicated track builds running significant boost or forced induction.

Key Features:

• Direct bolt-in 240mm Super Twin disc clutch with larger disc diameter compared to OEM for superior heat management and torque capacity
• Constructed with aircraft-grade aluminum and high-carbon billet steel milled to industry-leading .001 inch tolerances for perfect balance and actuation
• Friction provided by dampened, full-faced carbon-graphite discs for smooth engagement and long service life
• Near-stock drivability, tremendous life expectancy, no shimming/setup bolt-in installation and maintenance-free operation
• Includes billet flywheel and track-spec hardware in each kit
• Rebuildable by SPEC or the end-user with replacement components always available

Designed for BMW M2 (N55 engine) and M3/M4 (S55 engine) manual transmission models, this complete clutch and flywheel assembly delivers the holding power needed for big turbo builds, supercharger setups, and race applications while maintaining excellent street manners. Perfect for drag racing, drifting, road racing, time attack, and aggressive street driving.