Spec Clutch SF663H Stage 2 Plus Clutch Kit - Carbon-Kevlar Multi-Friction

The SPEC SF663H Stage 2 Plus Clutch Kit is engineered for modified engines that demand higher torque capacity than a standard Stage 2 clutch can handle. Retaining the familiar Stage 2 pedal feel, this kit delivers excellent daily drivability without sacrificing performance headroom — making it an ideal upgrade for street-driven vehicles that also see track, drag, or rally use.

At the heart of this kit is a high-clamp pressure plate paired with a composite multi-friction carbon-kevlar disc, delivering superior heat resistance and torque transfer compared to organic or standard Stage 2 materials. The high-torque sprung hub and disc assembly helps absorb driveline shock, reducing stress on transmission components while maintaining smooth engagement. Wear characteristics are significantly improved over more aggressive clutch compounds, extending service life even under demanding conditions.

Key Features:

• High-clamp pressure plate for increased torque capacity beyond standard Stage 2
• Composite multi-friction carbon-kevlar friction material for superior heat and wear resistance
• High-torque sprung hub and disc assembly for driveline shock absorption
• Retains Stage 2 pedal feel for comfortable daily driving
• Includes bearing and installation tool kit
• Suitable for a wide range of performance driving applications

Intended Use: Street, Drag Racing, Road Racing, Rally, Pulling, Autocross

The SPEC SF663H is a bolt-in performance upgrade for drivers who have outgrown their Stage 2 clutch and need more torque capacity without stepping up to a race-only, harsh-engagement clutch system.