Spec Clutch SF233 Stage 3 Performance Clutch Kit

The SPEC SF233 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand high torque capacity without sacrificing everyday drivability. Designed for drivers who want an aggressive yet streetable engagement, this kit delivers a comfortable pedal feel, quick engagement, and strong 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 a 4 or 6 puck configuration depending on application — paired with a high-torque sprung hub assembly. The sprung hub is double-sprung with spring cover reliefs for added flexibility, and features heat-treated components for long-term strength and durability. A high-clamp pressure plate provides the clamping force needed to handle serious power output.

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic 4 or 6 puck friction disc (application dependent)
• High-torque sprung hub and disc assembly
• Release bearing
• Installation tool kit

Intended Driving Applications:

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

SPEC clutches are designed, hand-built, and tested in the U.S.A., and every SPEC clutch kit is SFI Approved. The Stage 3 sits within SPEC's street/strip range (Stages 1–3+), making it an ideal upgrade for performance-oriented builds that still see regular road use. Flywheel not included.