Spec Clutch SB343H Stage 2 Plus Performance Clutch Kit

The SPEC SB343H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than the standard Stage 2 can handle, while preserving the street-friendly feel drivers expect from a Stage 2 clutch. Bridging the gap between the Stage 2 and Stage 3, this kit delivers 15–20% higher torque capacity without sacrificing daily drivability or wear life.

At the core of the Stage 2 Plus is a multi-friction composite disc in a full-faced configuration, combining carbon semi-metallic material on one side and Kevlar® on the other for outstanding grip, heat resistance, and longevity. The high-clamp pressure plate increases clamping force over the standard Stage 2, while the double-sprung hub features spring cover reliefs for smooth engagement and heat-treated components for long-term durability.

Key Features:

• High-clamp pressure plate for increased torque holding capacity
• Multi-friction disc — carbon semi-metallic on one side, Kevlar® on the other
• Full-faced disc configuration for excellent power transfer and wear characteristics
• Double-sprung hub with spring cover reliefs for engagement smoothness and flexibility
• Heat-treated hub and disc components for strength and durability
• Bearing and installation tool kit included

Ideal Driving Applications: Street, Drag Racing, Road Racing, Rally, Pulling, Autocross, and Drifting

Designed and hand-built in the USA, the SPEC SB343H Stage 2 Plus delivers a compelling balance of performance and street manners — the ideal upgrade for modified vehicles that need more bite without the harshness of a race-only clutch.