SPEC SZ353H Stage 2 Plus Performance Clutch Kit Carbon-Kevlar Multi-Friction

The SPEC SZ353H Stage 2 Plus Clutch Kit is a high-performance upgrade engineered to bridge the gap between the Stage 2 and Stage 3 clutch systems. Designed for drivers who demand more holding power without sacrificing everyday drivability, the Stage 2+ delivers a 15–20% higher torque capacity than the standard Stage 2 while maintaining smooth, predictable engagement characteristics.

At the heart of this kit is a multi-friction disc in a full-faced configuration, combining carbon semi-metallic material on one side and Kevlar® on the other. This hybrid friction pairing optimizes both grip and wear resistance across a wide range of driving conditions. The hub is double-sprung with spring cover reliefs for enhanced flexibility, and all critical components are heat-treated for long-term strength and durability. The disc measures 8.875 inches in diameter and features a 22-spline, 0.938-inch input shaft interface.

Key Features:

• Multi-friction disc — carbon semi-metallic on one face, Kevlar® on the other
• Full-faced disc configuration for maximum contact area and heat dissipation
• High-clamp performance pressure plate for increased holding power
• Double-sprung hub with spring cover reliefs for smooth engagement and flexibility
• Heat-treated components for superior strength and durability
• 8.875 in. disc diameter | 22-spline | 0.938 in. input shaft diameter
• Bearing and tool kit included
• Flywheel not included

Intended Use:

• Street performance
• Drag racing
• Autocross
• Road racing
• Rallye / Rally
• Pulling
• Drift

The SPEC Stage 2+ is an ideal choice for modified vehicles that have outgrown a Stage 2 clutch but do not require the aggressive engagement behavior of a full Stage 3. It retains the street manners expected from a daily-driven performance vehicle while providing the additional torque capacity demanded by spirited and competitive driving.