Spec Clutch SC423F Stage 3+ High-Performance Clutch Kit

The SPEC SC423F Stage 3+ Clutch Kit is the flagship performance clutch solution engineered for heavily modified street and race engines that demand high torque capacity without sacrificing daily drivability. Designed as a step above the Stage 3, the Stage 3+ delivers superior torque handling and wear characteristics while maintaining a manageable, street-friendly engagement feel.

At the heart of this kit is a full-face carbon semi-metallic friction disc, offering an exceptional balance of friction coefficient, service life, and drivability in a single package. The hub features a double-sprung design with spring cover reliefs for enhanced flexibility, while heat-treated internal components provide long-term strength and durability under demanding conditions.

Key Features:

• High-clamp performance pressure plate for maximum clamping force
• Full-face carbon semi-metallic friction material for superior life and friction coefficient
• Double-sprung high-torque hub and disc assembly with spring cover reliefs
• Heat-treated components for strength and durability
• Torque capacity up to 845 ft-lbs
• Bearing and alignment tool kit included
• Made in the U.S.A.

Ideal Driving Applications: Street, Drag Racing, Drift, Road Racing, Autocross, Pulling, Rallye

The SPEC Stage 3+ is the go-to clutch upgrade for high-powered builds that require race-level torque capacity while retaining the drivability needed for street use. It is a complete kit, including everything needed for a direct bolt-in installation.