Spec Clutch SN26ST Super Twin ST-Trim Multi-Disc Clutch Kit with Billet Flywheel

The Spec Clutch SN26ST Super Twin ST-Trim is a complete multi-disc clutch and flywheel kit engineered for high-powered street and track builds demanding between 700 and 1,500 ft-lbs of torque. Despite its extreme holding capacity, the Super Twin is designed to deliver near-stock drivability — making it equally at home on a daily-driven performance car as it is on the strip, circuit, or stage.

What's Included:

• Billet flywheel
• Billet hydraulic release bearing / slave cylinder assembly
• Stainless steel hydraulic line and hardware
• Track-spec fastener hardware

Key Features:

• All-billet construction — aircraft-grade aluminum and high-carbon billet steel components machined to an industry-leading .001-inch tolerance for perfect balance and smooth actuation
• Dampened, full-face carbon graphite friction discs provide consistent, progressive engagement under extreme heat and load
• No shimming or setup required — true bolt-in installation with no custom adjustment needed
• Maintenance-free operation with a quiet, smooth feel under all driving conditions
• Rebuildable design — units can be rebuilt by SPEC or the end user; replacement components and rebuild services are available
• Friction disc options available in organic, fiber, and full-metallic configurations

Intended Use:

• Street, drag racing, drifting, road racing, time attack, pulling, and rally

Every SPEC Super Twin kit is designed, hand-built, and tested in the USA, and is SFI approved. The ST-Trim designation indicates this kit is configured with a billet flywheel and the full billet hydraulic release bearing and slave assembly package — ideal for pull-type clutch applications in extreme-power platforms.