Spec Clutch ST423 Stage 3 Performance Clutch Kit Carbon Semi-Metallic

The Spec Clutch ST423 Stage 3 Clutch Kit is engineered for heavily modified street and race engines that demand aggressive, high-torque clutch performance without sacrificing daily drivability. Designed for street and race cars that require an assertive yet streetable engagement, this kit delivers a comfortable pedal feel, sharp shifts, and reliable performance under both low and high stress conditions.

Key Features:

• High-clamp pressure plate for increased torque capacity and positive engagement
• Carbon semi-metallic puck disc — the leading puck clutch design for drivability, longevity, and torque capacity
• 6-puck sprung hub disc standard on most applications; 4-puck configuration available when specified at time of ordering
• Double-sprung hub with spring cover relieves for enhanced flexibility and heat-treated components for superior strength and durability
• SFI approved — all Spec clutch kits and flywheels carry SFI approval
• Kit includes high-clamp pressure plate, carbon semi-metallic disc assembly, release bearing, and installation tool

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

The Stage 3 is Spec's ultimate street/strip solution — providing excellent wear characteristics and consistent performance for high-powered vehicles. Note: Unless installing with a new SPEC flywheel, the existing flywheel must be resurfaced prior to installation to ensure proper friction surface integrity.