Spec Clutch SN23ET Super Twin Multi-Disc Clutch Kit E-Trim with Billet Flywheel

The Spec Clutch SN23ET Super Twin Multi-Disc Clutch Kit is engineered for high-performance street and track use in vehicles producing extreme horsepower and torque ranging from 700 to 1,500 ft-lbs. This E-Trim configuration is SPEC's most complete package, bundling a billet aluminum flywheel, billet hydraulic release bearing and slave cylinder assembly, stainless steel hydraulic line, and all required hardware in one bolt-in kit.

Despite its extreme torque capacity, the Super Twin is designed to deliver near-stock drivability — smooth engagement, quiet operation, and a no-shimming, no-setup installation process that eliminates the complexity typically associated with multi-disc clutch systems. The all-billet construction ensures balanced, precise actuation right out of the box.

Key Features:

• Rated for 700–1,500 ft-lbs of torque — suitable for street, drag, drift, road racing, time attack, pulling, and rallye
• E-Trim package includes billet flywheel, billet hydraulic release bearing/slave assembly, stainless steel line, and hardware
• Constructed from aircraft-grade aluminum and high-carbon billet steel, milled to an industry-leading .001-inch tolerance for perfect balance and actuation
• Friction provided by dampened, full-faced carbon graphite discs for consistent, predictable engagement
• Available friction disc materials: organic, fiber, and full metallic
• Bolt-in installation — no shimming or custom setup required
• Rebuildable by SPEC or the end user; replacement components and rebuild services are always available
• Maintenance-free operation with tremendous service life expectancy

The SPEC Super Twin SN23ET is the definitive clutch upgrade for high-output Nissan builds where reliability, drivability, and extreme torque capacity are non-negotiable.