Spec Clutch SB013F Stage 3 Plus High-Performance Clutch Kit

The Spec Clutch SB013F Stage 3 Plus is the flagship performance clutch kit designed for heavily modified street and race engines that demand more torque capacity than the standard Stage 3 can handle. Built for drivers who need serious power management without sacrificing daily drivability, the Stage 3+ delivers a manageable, friendly engagement while stepping up friction performance and wear characteristics beyond the Stage 3.

At the heart of this kit is a full-faced carbon semi-metallic friction disc — a design that delivers outstanding friction coefficient, exceptional service life, and street-friendly drivability in a single package. The disc hub is double-sprung with spring cover reliefs for added flexibility, while heat-treated internal components provide long-term strength and durability under high-load conditions.

Kit Includes:

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

Ideal Driving Applications:

• Street performance
• Drag racing
• Drifting
• Road racing
• Rally
• Pulling
• Autocross

The Spec SB013F Stage 3+ clutch kit is engineered and manufactured to deliver race-proven performance while remaining manageable on the street — making it an ideal upgrade for high-output builds that spend time both at the track and on public roads.