Spec Clutch SB073H Stage 2 Plus High-Performance Clutch Kit

The SPEC SB073H 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, the Stage 2 Plus retains the smooth, street-friendly engagement feel of the Stage 2 while delivering a 15–20% higher torque capacity — making it an ideal upgrade for performance-built engines used in a wide range of driving applications.

The disc features a full-face, multi-friction composite design with carbon semi-metallic material on one side and Kevlar on the other, providing excellent wear characteristics and consistent performance under demanding conditions. The high-clamp pressure plate delivers increased clamping force, while the high-torque sprung hub and disc assembly absorbs driveline shock for smooth power transfer. The double-sprung hub includes spring cover reliefs for added flexibility, and all hub components are heat-treated for long-term strength and durability.

Kit Includes:

• High-clamp pressure plate (new billet non-SAC)
• Multi-friction carbon semi-metallic / Kevlar composite disc
• High-torque sprung hub and disc assembly
• Release bearing
• Installation tool kit

Intended Use:

• Street performance
• Drag racing
• Road racing
• Rally and rallycross
• Autocross
• Pulling
• Drift

SPEC clutches are designed, hand-built, and tested in the U.S.A., and every SPEC clutch kit and flywheel has received SFI approval. The Stage 2 Plus is the go-to choice for enthusiasts who need more grip than stock or Stage 2 without sacrificing daily drivability.