Spec Clutch SA403F-2 Stage 3 Plus Performance Clutch Kit

The SPEC SA403F-2 Stage 3+ Clutch Kit is SPEC's flagship high-performance street and race clutch, engineered for high-powered applications that still demand manageable, driver-friendly engagement. Built around a carbon semi-metallic full-face friction disc, this kit delivers an exceptional balance of torque capacity, long service life, and drivability that sets it apart from conventional performance clutches.

The disc hub features a double-sprung design with spring cover reliefs for added flexibility and smoother engagement, while heat-treated internal components provide lasting strength and durability under sustained high-load use. The kit is designed exclusively for use with a SPEC billet flywheel and includes a torque rating of up to 679 ft-lbs, making it well-suited for modified street cars and dedicated track builds alike.

Key Features:

• High-clamp billet pressure plate for increased clamping force
• Carbon semi-metallic full-face friction disc for superior wear resistance and heat tolerance
• Double-sprung hub with spring cover reliefs for flexibility and smooth engagement
• Heat-treated hub components for strength and long-term durability
• Throwout bearing and alignment tool included
• SFI approved kit
• For use with SPEC billet flywheel only

Intended Use: Street, Drag Racing, Autocross, Pulling, Road Racing, Rally, and Drifting