Spec Clutch SM583H Stage 2 Plus Performance Clutch Kit

The SPEC SM583H Stage 2 Plus Clutch Kit is engineered for modified engines that have exceeded the torque capacity of the standard SPEC Stage 2 clutch. Bridging the gap between the Stage 2 and Stage 3 kits, the Stage 2 Plus delivers the familiar, street-friendly engagement feel of the Stage 2 while adding a significant boost in torque-handling capability — making it an ideal upgrade for heavily modified street and track builds.

The composite multi-friction disc features a full-faced configuration with carbon semi-metallic material on one side and Kevlar® on the other, providing excellent wear resistance and consistent torque transfer. The double-sprung hub with spring cover reliefs absorbs drivetrain shock and reduces noise, vibration, and harshness for improved daily drivability. Heat-treated hub components add long-term strength and durability under demanding conditions.

Key Features:

• High-clamp pressure plate for increased clamping force
• Composite multi-friction disc — carbon semi-metallic / Kevlar® full-faced construction
• 15–20% higher torque capacity compared to the standard Stage 2 kit
• Double-sprung high-torque hub and disc assembly with spring cover reliefs
• Heat-treated hub components for enhanced strength and longevity
• Retains Stage 2 street-friendly pedal feel and engagement quality
• Includes release bearing and installation tool kit

Ideal Applications: Street, Drag Racing, Road Racing, Rally, Autocross, Pulling

The SPEC Stage 2 Plus clutch kit is the smart choice for drivers who need more holding power than a Stage 2 can provide, without sacrificing the progressive engagement and daily drivability that makes SPEC clutches a top choice for performance enthusiasts.