Spec Clutch SN623H Stage 2 Plus Performance Clutch Kit

The SPEC SN623H Stage 2 Plus Clutch Kit is engineered for modified engines that demand more torque capacity than a standard Stage 2 clutch can handle. Bridging the gap between the Stage 2 and Stage 3 kits, the Stage 2 Plus delivers the smooth, street-friendly engagement feel of the Stage 2 while providing a 15–20% higher torque capacity — making it an ideal choice for performance-modified vehicles that still see regular street use.

The disc features a full-faced, multi-friction composite design with carbon semi-metallic material on one side and Kevlar® on the other, delivering excellent wear characteristics alongside strong, consistent torque transfer. The hub is double-sprung with spring cover reliefs for added flexibility, while heat-treated internal components ensure long-term strength and durability under demanding conditions.

Key Features:

• Multi-friction disc in full-faced configuration — carbon semi-metallic on one side, Kevlar® on the other
• High-clamp performance pressure plate for increased clamping force
• Double-sprung hub with spring cover reliefs for smooth, flexible engagement
• Heat-treated components for enhanced durability and strength
• High-torque sprung hub and disc assembly
• Includes release bearing and installation tool kit
• Designed and hand-built in the U.S.A.

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

The SPEC Stage 2 Plus Kit is the preferred upgrade for drivers who need more torque capacity than a Stage 2 can provide, without sacrificing the daily drivability and progressive engagement of a street-oriented clutch.