Spec Clutch SO603HS Stage 2+ High Performance Clutch Kit

The Spec Clutch SO603HS is a Stage 2+ high-performance clutch kit engineered for enthusiasts who demand increased torque capacity while maintaining excellent street drivability. This kit is designed, hand-built, and tested in the USA using advanced fabrication processes and strict tolerances.

Stage 2+ Design:

Bridging the gap between Stage 2 and Stage 3 performance, the Stage 2+ configuration delivers the smooth engagement and drivability characteristics of a Stage 2 clutch with 15-20% higher torque capacity. The multi-friction disc features a full-faced configuration with carbon semi-metallic material on one side and Kevlar on the other, providing an ideal balance of grip, durability, and daily drivability.

Key Features:

• Multi-friction full-faced disc with carbon semi-metallic and Kevlar construction
• High sprung hub design for improved flexibility and reduced drivetrain shock
• 15-20% greater torque capacity compared to Stage 2
• Excellent street manners with aggressive performance potential
• SFI approved for racing applications
• Hand-built in Bessemer, Alabama
• Includes release bearing and installation components where applicable

Applications:

Ideal for street performance vehicles, spirited driving, autocross, and track day use where enhanced power handling is required without sacrificing daily drivability. The Stage 2+ is perfect for modified engines with bolt-on performance upgrades or mild forced induction.

For optimal performance and longevity, SPEC recommends replacing or resurfacing your flywheel when installing this clutch kit.