Spec Clutch SP903H-3 Stage 2 Plus Performance Clutch Kit

The Spec Clutch SP903H-3 Stage 2 Plus Clutch Kit is a high-performance clutch system engineered to bridge the gap between the Stage 2 and Stage 3 lineups. It delivers the smooth, street-friendly drivability and engagement feel of the Stage 2, while offering a 15–20% higher torque capacity — making it an ideal upgrade for drivers who need more holding power without sacrificing daily driveability.

At the heart of the kit is a multi-friction disc in a full-faced configuration, combining carbon semi-metallic material on one side with Kevlar on the other. This hybrid friction pairing optimizes heat resistance, longevity, and consistent pedal feel across a wide range of demanding driving conditions.

The hub assembly features a double-sprung design with spring cover reliefs for added flexibility under load, along with heat-treated components throughout for long-term strength and durability. A high-clamp pressure plate rounds out the assembly, ensuring positive engagement even under hard use.

Key Features:

• Multi-friction disc — carbon semi-metallic on one side, Kevlar on the other, full-faced configuration
• High-clamp pressure plate for increased clamping force
• Double-sprung hub with spring cover reliefs for flexibility and heat-treated components for durability
• Hybrid Kevlar and carbon-graphite friction material
• High-torque sprung hub and disc assembly
• Bearing and installation tool kit included
• SFI approved

Ideal Use Cases: Street, drag racing, autocross, road racing, pulling, rally, and drift.