Spec Clutch SF623 Stage 3 Performance Clutch Kit

The Spec Clutch SF623 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand aggressive holding power without sacrificing daily drivability. Delivering a comfortable pedal feel with quick, precise engagement, the Stage 3 strikes the ideal balance between streetable performance and track-ready capability.

At its core, the SF623 features a high-clamp performance pressure plate paired with a carbon semi-metallic friction disc — available in a 4-puck or 6-puck configuration depending on the application (6-puck is standard on most fitments). The sprung hub and disc assembly is double-sprung with spring cover reliefs for enhanced flexibility, while heat-treated internal components provide long-term strength and durability under both low and high stress conditions.

Kit Includes:

• High-clamp performance pressure plate
• Carbon semi-metallic 4 or 6-puck sprung hub disc assembly
• Release bearing
• Installation tool kit

Key Features:

• Carbon semi-metallic friction material for outstanding bite, torque capacity, and service life
• High-clamp pressure plate for maximum holding power
• Double-sprung hub with spring cover reliefs for smooth, consistent engagement
• Heat-treated components for superior strength and durability
• 6-puck disc standard; 4-puck available on select applications
• SFI approved

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

The SPEC Stage 3 is recommended for street/strip use and sits within SPEC's performance lineup between the Stage 2+ and Stage 3+, making it an ideal choice for high-powered builds that still require everyday driveability.