Spec Clutch SC663H-2 Stage 2 Plus Performance Clutch Kit

The Spec Clutch SC663H-2 Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can deliver. Bridging the gap between the Stage 2 and Stage 3, this kit provides 15–20% higher torque capacity while preserving the smooth, street-friendly engagement feel the Stage 2 is known for. Rated to handle up to 715 ft-lbs of torque, it is a direct-replacement upgrade that reuses the factory flywheel design.

Key Features:

• Multi-friction composite disc in a full-faced configuration — carbon semi-metallic material on one side and Kevlar® on the other for balanced grip and wear life
• High-clamp pressure plate for increased clamping force on high-output applications
• Double-sprung hub with spring cover reliefs for flexibility and heat-treated components for strength and long-term durability
• High-torque sprung hub and disc assembly designed to handle the demands of modified and tuned powerplants
• Disc diameter: 292mm (11.500 in)
• Torque capacity: Up to 715 ft-lbs
• Includes bearing and alignment tool kit for installation
• Compatible with factory flywheel — resurfacing of the OE flywheel is strongly recommended prior to installation

Ideal Driving Applications: Street, drag racing, road racing, rally, autocross, drifting, and pulling.

The SC663H-2 delivers the everyday drivability and progressive clutch feel of a Stage 2, backed by the extra holding power needed for serious performance builds. It is a factory-style replacement upgrade built to SPEC's precision manufacturing standards.