Spec Clutch SO553F Stage 3 Plus Performance Clutch Kit

The SPEC SO553F Stage 3 Plus Clutch Kit is the flagship street and race clutch solution for heavily modified, high-torque applications that demand more capacity than a standard Stage 3 can deliver. Built around a carbon semi-metallic full-faced friction disc, the Stage 3+ offers an outstanding balance of torque capacity, long service life, and daily drivability — making it one of the most versatile performance clutch kits available.

Key Features:

• High-clamp pressure plate engineered for elevated torque demands beyond Stage 3 limits
• Carbon semi-metallic full-faced friction material for superior friction coefficient, long wear life, and consistent engagement
• High-torque double-sprung hub and disc assembly with spring cover reliefs for flexibility and heat-treated components for added strength and durability
• Bearing and tool kit included for a complete installation package
• SFI Approved — designed, hand-built, and tested in the U.S.A.

Intended Driving Applications:

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

The Stage 3+ represents SPEC's most refined single-disc street and race clutch stage, delivering unparalleled drivability and engagement characteristics in a single package. Ideal for high-powered builds that require a manageable, consistent pedal feel without sacrificing performance or longevity.