SPEC ST183H Stage 2 Plus Performance Clutch Kit

The SPEC ST183H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can deliver, while preserving the street-friendly engagement feel that makes the Stage 2 a daily-driver favorite. Bridging the gap between the Stage 2 and Stage 3, the Stage 2 Plus delivers 15–20% higher torque capacity than the Stage 2 without sacrificing drivability or pedal comfort.

The kit centers on a multi-friction disc in a full-faced configuration, combining carbon semi-metallic material on one side and Kevlar® on the other for exceptional durability and consistent engagement across a wide range of driving conditions. The double-sprung hub features spring cover reliefs for flexibility, while heat-treated components throughout provide long-term strength and resistance to wear.

Kit Includes:

• High-clamp pressure plate
• Composite multi-friction carbon semi-metallic / Kevlar® full-face clutch disc
• High-torque double-sprung hub and disc assembly
• Release bearing and installation tool kit

Key Features:

• 15–20% higher torque capacity vs. Stage 2
• Full-faced multi-friction disc — carbon semi-metallic one side, Kevlar® the other
• High-clamp pressure plate for secure power transfer
• Double-sprung hub with heat-treated components for durability and flexibility
• Maintains Stage 2 engagement quality and daily drivability
• SFI approved

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

The SPEC ST183H is an ideal upgrade for performance builds that have outgrown a stock or Stage 2 clutch but still require predictable, streetable engagement on a daily basis.