Spec Clutch SC423YH Stage 2 Plus High-Performance Clutch Kit

The SPEC SC423YH Stage 2 Plus Clutch Kit is engineered for modified, high-output engines that demand more torque capacity than a standard Stage 2 clutch can handle—without sacrificing everyday street manners. Bridging the gap between the Stage 2 and Stage 3, this kit delivers a 15–20% higher torque capacity while retaining the smooth, predictable engagement feel drivers expect from a Stage 2 setup.

At the heart of this kit is a full-faced, composite multi-friction disc combining carbon semi-metallic material on one side and Kevlar® on the other—a proven hybrid friction formula that balances aggressive torque transfer with excellent wear characteristics and long service life. The double-sprung hub features spring cover reliefs for drivetrain flexibility and heat-treated components for lasting strength under demanding conditions.

What's Included:

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

Key Features:

• 15–20% higher torque capacity vs. standard Stage 2
• Full-faced disc configuration for smooth, consistent engagement
• Carbon semi-metallic / Kevlar® hybrid friction material for strength and durability
• Double-sprung hub with spring cover reliefs for flexibility
• Heat-treated hub components for high-stress applications
• SFI approved

Ideal Applications: Street performance, drag racing, road racing, rally, autocross, pulling