Spec Clutch SE133F Stage 3 Plus Performance Clutch Kit

The SPEC SE133F Stage 3 Plus Clutch Kit is the flagship performance clutch solution engineered for heavily modified street machines and dedicated race cars that demand torque capacity beyond what the standard Stage 3 can deliver. Designed to handle extreme power while maintaining manageable, street-friendly engagement, the Stage 3 Plus strikes the ideal balance between all-out performance and daily drivability.

At the heart of the Stage 3 Plus is a full-faced carbon semi-metallic friction disc, a significant upgrade over the puck-style disc used in the Stage 3. This full-faced design delivers superior drivability, extended wear life, and an exceptional friction coefficient — all in a single package. The high-clamp pressure plate provides the aggressive clamping force needed to handle elevated torque loads without slip.

The disc hub features a double-sprung design with spring cover reliefs for enhanced flexibility and vibration absorption, while heat-treated internal components ensure long-term strength and durability under repeated thermal cycling. SPEC clutches are designed, hand-built, and tested in the U.S.A.

Kit Includes:

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

Intended Use:

• Street (high-performance and modified)
• Drag Racing
• Road Racing
• Drifting
• Pulling
• Autocross / Rally

The SPEC Stage 3 Plus is the go-to choice for drivers who need maximum torque handling without sacrificing the pedal feel and engagement characteristics required for street use or endurance competition.