Spec Clutch SL54ET Super Twin E-Trim Multi-Disc Clutch and Flywheel Kit

The Spec Clutch SL54ET Super Twin E-Trim is a high-performance twin-disc clutch and flywheel kit engineered for street and track use in vehicles producing extreme power. Rated to handle 700–1,500 lb-ft of torque, this multiplate clutch kit delivers the holding capacity required for serious performance builds without sacrificing everyday drivability. Designed, hand-built, and tested in the U.S.A., the Super Twin provides near-stock engagement feel alongside a no-shimming, bolt-in installation that requires no special setup procedures.

Key Features:

• Extreme torque capacity — rated for 700 to 1,500 lb-ft, suitable for drag, drift, road racing, time attack, street, pulling, and rallye applications
• All-billet construction — aircraft-grade aluminum and high-carbon billet steel components milled to an industry-leading .001-inch tolerance for perfect balance and actuation
• Dampened, full-faced carbon-graphite friction discs — provide smooth, progressive engagement with long service life
• No shimming or setup required — true bolt-in installation with maintenance-free operation
• SFI approved — meets SFI safety standards for performance clutch and flywheel assemblies
• Multiple friction material options — organic, fiber, and full-metallic disc versions available to match your driving demands
• Rebuildable design — can be serviced by SPEC or the end user; replacement components and rebuild services are readily available
• Complete kit — includes billet aluminum flywheel and track-spec hardware

The E-Trim designation denotes SPEC's carbon-graphite full-faced disc configuration, offering an optimal blend of street drivability and high-output track performance. The Super Twin's all-billet assembly is notably smooth and quiet in operation, making it equally at home on a daily driver as it is at the drag strip or road course.