Spec Clutch SF963 Stage 3 Performance Clutch Kit

The Spec Clutch SF963 Stage 3 Performance Clutch Kit is engineered for heavily modified street and race engines that demand high torque capacity without sacrificing daily drivability. Designed to deliver an aggressive yet streetable engagement, this kit strikes the ideal balance between race-ready performance and a comfortable pedal feel for everyday driving.

At the heart of the SF963 is a carbon semi-metallic puck disc paired with a high-clamp pressure plate for exceptional clamping force and torque transfer. The high-torque sprung hub features a double-sprung design with spring cover reliefs for drivetrain flexibility, while heat-treated components ensure long-term strength and durability under both low and high stress conditions.

Kit Includes:

• High-clamp pressure plate
• Carbon semi-metallic 4 or 6 puck disc with high-torque sprung hub assembly (6-puck standard on most applications; 4-puck available upon request)
• Release bearing
• Installation tool kit

Recommended Driving Applications:

• Street
• Drag Racing
• Drift
• Road Racing
• Rallye
• Pulling
• Autocross

The Spec Stage 3 clutch line has earned its reputation as a leading puck clutch system in drivability, service life, and torque capacity — making the SF963 an excellent upgrade for serious performance builds that still see regular street use.