Spec Clutch SC583H Stage 2 Plus Performance Clutch Kit

The Spec Clutch SC583H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can deliver. Bridging the gap between the Stage 2 and Stage 3, this kit raises the torque ceiling by 15–20% while preserving the smooth, street-friendly engagement feel drivers expect from a Stage 2 setup.

The disc uses a full-faced, composite multi-friction design with carbon semi-metallic material on one side and Kevlar® on the other, delivering an ideal balance of grip, longevity, and daily drivability. The hub is double-sprung with spring cover reliefs for added flexibility, and all hub components are heat-treated for long-term strength and durability under sustained high-torque loads.

Key Features:

• High-clamp pressure plate for increased torque holding capacity
• Full-faced composite disc — carbon semi-metallic / Kevlar® multi-friction material
• 15–20% higher torque capacity vs. standard Stage 2
• Double-sprung, heat-treated high-torque sprung hub and disc assembly
• Maintains Stage 2 engagement quality for excellent street drivability
• Includes release bearing and installation tool kit
• Designed, hand-built, and tested in the USA

Recommended Driving Applications: Street, Drag Racing, Road Racing, Rally, Autocross, Pulling

The SC583H is an ideal upgrade for performance builds that have outgrown the stock or Stage 2 clutch but don't require the more aggressive engagement characteristics of a Stage 3 unit. Whether you're building a high-output daily driver or a dedicated track car, this kit provides the torque capacity and reliability to match your build.