Spec Clutch SM063F Stage 3 Plus Performance Clutch Kit

The Spec Clutch SM063F Stage 3 Plus is the flagship performance clutch kit engineered for heavily modified street and race engines that demand more torque capacity than the standard Stage 3 can provide. Designed for high-powered builds requiring a manageable, friendly engagement, the Stage 3+ delivers the ideal balance of aggressive performance and real-world drivability.

At the heart of this kit is a carbon semi-metallic full-faced friction disc — a material that delivers unparalleled service life, friction coefficient, and drivability in a single package. The hub is double-sprung with spring cover reliefs for added flexibility, while heat-treated internal components provide the strength and durability needed for sustained high-torque applications. Compared to the Stage 3, the Stage 3+ offers better wear characteristics and improved manageability without sacrificing holding power.

Kit Includes:

• High-clamp performance pressure plate
• Full-faced carbon semi-metallic friction disc
• High-torque double-sprung hub and disc assembly
• Release bearing
• Alignment tool kit

Intended Use:

• Street
• Drag Racing
• Drifting
• Road Racing
• Autocross
• Pulling
• Rally

Designed, hand-built, and tested in the U.S.A., the Spec SM063F Stage 3 Plus is a proven choice for serious enthusiasts and competitors who refuse to compromise between streetability and race-level performance.