Spec Clutch SB633 Stage 3 Performance Clutch Kit

The Spec Clutch SB633 Stage 3 Clutch Kit is the ultimate street/strip solution for heavily modified and high-performance engines demanding aggressive grip without sacrificing daily drivability. Engineered for drivers who push their vehicles hard on the street and at the track, this kit delivers a confident, quick engagement with a comfortable pedal feel and excellent wear characteristics under both low and high stress conditions.

At the heart of the Stage 3 kit is a carbon semi-metallic puck disc — available in 4 or 6 puck configurations depending on application (6 puck is standard on most fitments). The double sprung hub features spring cover reliefs for flex and heat-treated components for long-term strength and durability, making it one of the most proven puck clutch designs available for drivability, service life, and torque capacity.

Kit Includes:

• High-clamp performance pressure plate
• 4 or 6 puck carbon semi-metallic friction disc with high-torque sprung hub assembly (6 puck standard; 4 puck available by request)
• Release bearing
• Installation tool kit

Key Features:

• Carbon semi-metallic friction material for outstanding grip and wear life
• Double sprung hub with heat-treated components for durability and flexibility
• High-clamp pressure plate for increased torque holding capacity
• SFI approved clutch kit and flywheel line
• Suitable for both street and race use with manageable engagement

Recommended Driving Applications: Street, Drag Racing, Drift, Road Racing, Rallye, Pulling, Autocross

The Spec Stage 3 clutch kit strikes the ideal balance between high-performance torque capacity and real-world streetability — making it a top choice for performance enthusiasts who demand reliability in every driving scenario.