Spec Clutch SM80ST Super Twin Multiplate Clutch Kit - Street & Track

The SPEC SM80ST Super Twin Multiplate Clutch Kit is an extreme-duty twin-disc clutch system engineered for high-performance street and track applications. Designed to handle 700–1,500 ft-lbs of torque, this kit delivers the grip and durability demanded by serious performance builds without sacrificing daily drivability.

Key Features:

• Handles 700–1,500 ft-lbs of torque — ideal for extreme horsepower builds
• Near-stock drivability with smooth, quiet engagement
• All-billet construction using aircraft-grade aluminum and high-carbon billet steel, milled to an industry-leading .001-inch tolerance for perfect balance and actuation
• No shimming or setup required — true bolt-in installation
• Maintenance-free operation under normal use conditions
• Friction provided by dampened, full-faced carbon graphite discs
• Available friction disc options: organic, fiber, and full metallic
• Rebuildable design — serviceable by SPEC or the end user; replacement components and rebuild services are always available
• Flywheel and track-spec hardware included in every kit

Intended Driving Applications:

• Street
• Drag racing
• Drift
• Road racing
• Time attack
• Pulling
• Rallye

The SPEC Super Twin ST-Trim is built for drivers who demand professional-grade clutch performance across all motorsport disciplines. Its precision-machined billet internals and long-service-life design make it a top choice for competition vehicles and extreme street builds alike.