Spec Clutch SB113 Stage 3 Performance Clutch Kit

The Spec Clutch SB113 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand aggressive performance without sacrificing daily drivability. Designed to deliver a comfortable pedal feel with quick, confident engagement, this kit excels under both low and high stress driving conditions.

At the core of this kit is a carbon semi-metallic puck disc — available in a 6-puck or 4-puck configuration depending on application — paired with a high-torque sprung hub assembly. The sprung hub is double-sprung with spring cover reliefs for flexibility, and features heat-treated components for long-term strength and durability.

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic 4 or 6 puck friction disc (6 puck standard on most applications)
• High-torque sprung hub and disc assembly
• Release bearing and installation tool kit

Key Features:

• Carbon semi-metallic friction material for superior torque capacity and wear resistance
• Double-sprung hub with spring cover reliefs for smooth, flexible engagement
• Heat-treated components for added strength and longevity
• SFI approved — every SPEC clutch kit and flywheel meets SFI standards
• Streetable engagement suitable for modified daily drivers and dedicated race builds

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

The SPEC Stage 3 is rated for street and strip use and represents the top of SPEC's streetable clutch lineup before transitioning into race-only Stage 4 and Stage 5 configurations. It is an ideal upgrade for drivers who need serious torque capacity without giving up the drivability required for regular road use.