Spec Clutch SO553H Stage 2 Plus Performance Clutch Kit

The SPEC SO553H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can deliver. Sitting between the Stage 2 and Stage 3 in SPEC's performance lineup, the Stage 2 Plus retains the familiar street-friendly engagement feel of the Stage 2 while delivering a 15–20% higher torque capacity — making it an ideal upgrade for heavily modified street cars, drag builds, and track-day machines alike.

At the heart of this kit is a multi-friction composite disc in a full-face configuration, combining carbon semi-metallic material on one side with Kevlar® on the other. This hybrid friction pairing delivers consistent grab, excellent heat resistance, and strong wear characteristics across a wide range of driving conditions.

Key Features:

• High-clamp pressure plate for increased clamping force over the standard Stage 2
• Hybrid carbon-graphite and Kevlar® friction disc in a full-face, multi-friction configuration
• High-torque sprung hub and disc assembly with double-sprung hub featuring spring cover reliefs for flexibility
• Heat-treated hub components for long-term strength and durability
• Bearing and alignment tool kit included for a complete installation
• Designed and hand-built in the USA

Intended Use: Street, Drag Racing, Road Racing, Rally, Pulling, Autocross

The SPEC SO553H Stage 2 Plus is a proven choice for performance enthusiasts who want a meaningful step up in holding power without sacrificing the daily-drivability that makes the Stage 2 platform so popular.