Spec Clutch SN503H-2 Stage 2 Plus Clutch Kit

The SPEC SN503H-2 Stage 2 PLUS Clutch Kit bridges the gap between the Stage 2 and Stage 3 performance levels, delivering a 15–20% higher torque capacity while retaining the smooth drivability and predictable engagement quality SPEC is known for in its Stage 2 lineup. This kit is built around a multi-friction disc in a full-faced configuration, combining carbon semi-metallic friction material on one side and Kevlar on the other — a hybrid design that balances aggressive grip with street-friendly modulation.

The disc features a double-sprung hub with spring cover reliefs for added flexibility, along with heat-treated components throughout for long-term strength and durability under high-demand conditions. A high-clamp pressure plate is included to deliver the increased holding power this stage demands.

Key Features:

• Hybrid friction material — carbon semi-metallic on one side, Kevlar on the other, in a full-faced configuration
• High-clamp pressure plate for elevated torque capacity
• Double-sprung hub with spring cover reliefs for flexibility and heat-treated components for durability
• 15–20% higher torque capacity versus the Stage 2 kit
• Kit includes clutch disc, pressure plate, release bearing, and alignment tool

Recommended Applications:

• Street performance
• Drag racing
• Autocross
• Road racing
• Pulling
• Rallye
• Drift

The Stage 2 PLUS is an ideal upgrade for drivers who have outgrown a Stage 2 clutch but prefer the daily-drivable feel and engagement characteristics of a street-oriented clutch over a full Stage 3 race setup.