Spec Clutch ST63ET Super Twin Multiplate Clutch Kit E-Trim

The SPEC ST63ET Super Twin Multiplate Clutch Kit is engineered for high-performance street and track applications, designed to handle extreme horsepower and torque outputs ranging from 700 to 1,500 ft-lbs of torque. Despite its race-level capability, the Super Twin delivers near-stock drivability, making it a practical choice for daily-driven performance builds as well as dedicated competition vehicles.

Key Features:

• All-billet construction using aircraft-grade aluminum and high-carbon billet steel, machined to an industry-leading .001-inch tolerance for perfect balance and smooth actuation
• Dampened, full-faced carbon graphite friction discs provide consistent, progressive clutch engagement
• Multiple friction material options available: organic, fiber, and full metallic to suit your specific application and driving style
• No shimming or setup required — true bolt-in installation for straightforward fitment
• Maintenance-free operation with smooth, quiet performance under all driving conditions
• Rebuildable design — can be serviced by SPEC or the end user; replacement components and rebuild services are always available
• Flywheel and track-spec hardware included in every kit
• Suitable for street, drag, drift, road racing, time attack, pulling, and rallye use

The SPEC Super Twin's precision-machined billet components ensure exceptional longevity and reliability even under sustained high-load conditions. Whether you're building a street/strip machine or a dedicated competition car, the ST63ET delivers the torque capacity and refinement needed for serious performance.