Spec Clutch SB133 Stage 3 Clutch Kit

The Spec Clutch SB133 Stage 3 Clutch Kit is engineered for heavily modified street and race applications that demand aggressive performance without sacrificing daily drivability. Designed and hand-built in the USA, this kit delivers a comfortable pedal feel, quick engagement, and excellent wear characteristics under both low and high-stress conditions.

At the heart of this kit is a high-clamp pressure plate paired with a carbon semi-metallic puck disc — the leading puck clutch design in drivability, service life, and torque capacity. The hub is double-sprung with spring cover reliefs for flexibility, and features heat-treated components for long-term strength and durability. A 6-puck configuration is standard on most applications, with a 4-puck disc available upon request.

Kit Includes:

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

Intended Use:

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

The Stage 3 sits within SPEC's seven-stage performance clutch lineup, making it ideal for street/strip builds that require more torque capacity than the Stage 2 can support while still maintaining streetable engagement. All SPEC clutch components are designed, tested, and manufactured in-house to strict tolerances for consistent, reliable performance.