Spec Clutch ST273H Stage 2 Plus Clutch Kit with Carbon-Kevlar Disc

The SPEC ST273H 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 retains the smooth, street-friendly engagement feel of the Stage 2 while delivering a 15–20% higher torque capacity — making it ideal for both daily-driven performance builds and dedicated motorsport applications.

At the heart of this kit is a full-face, multi-friction disc featuring carbon semi-metallic material on one side and Kevlar® on the other, combining excellent wear characteristics with strong, consistent torque transfer. The hub is double-sprung with spring cover reliefs for pedal flexibility and refined engagement quality, with heat-treated components throughout for long-term strength and durability.

Kit Includes:

• High-clamp performance pressure plate
• Multi-friction composite disc — carbon semi-metallic / Kevlar® full-face configuration
• High-torque double-sprung hub and disc assembly
• Release bearing
• Installation tool kit

Intended Use:

• Street / Daily Driver
• Drag Racing
• Road Racing
• Rally
• Pulling
• Autocross
• Drifting

Designed, hand-built, and tested in the U.S.A., the SPEC Stage 2 Plus clutch kit is a proven upgrade for enthusiasts who need more holding power without sacrificing the drivability they depend on every day.