Spec Clutch SJ633F Stage 3 Plus Clutch Kit Carbon Semi-Metallic

The Spec Clutch SJ633F Stage 3 Plus Clutch Kit is the flagship performance clutch stage designed for high-powered street and race applications that demand strong grip without sacrificing drivability. Featuring a carbon semi-metallic full-face friction disc, the Stage 3+ delivers an exceptional balance of torque capacity, friction coefficient, and long service life in a single complete package.

The disc assembly uses a high-torque double-sprung hub with spring cover reliefs engineered for smooth, flexible engagement. Heat-treated internal components add the strength and durability needed to withstand demanding performance driving conditions. A high-clamp pressure plate rounds out the assembly to ensure consistent clamping force under load.

Key Features:

• High-clamp pressure plate for increased torque holding capacity
• Carbon semi-metallic full-face friction material for superior life and friction coefficient
• High-torque double-sprung hub and disc assembly with spring cover reliefs
• Heat-treated hub components for strength and durability
• SFI approved clutch kit and flywheel
• Includes bearing and installation tool kit

Recommended Applications:

• Street performance
• Drag racing
• Pulling
• Autocross
• Road racing
• Rally
• Drift

The Spec SJ633F Stage 3 Plus is a complete, ready-to-install clutch kit built for drivers who need maximum performance with a street-manageable pedal feel. SFI approval makes it competition-ready straight out of the box.