Spec Clutch SF412 Stage 2 Kevlar Clutch Kit

The Spec Clutch SF412 Stage 2 Clutch Kit is engineered for drivers who demand a meaningful performance upgrade without sacrificing daily drivability. Designed for mild to moderately modified naturally aspirated and forced induction (power adder) engines, this clutch kit delivers superior holding power while maintaining a street-friendly pedal feel. It is equally well-suited for stock power levels where long service life and smooth engagement are the priority.

At the heart of the Stage 2 kit is a segmented or full-faced pure Kevlar friction disc with steel backing. This lining technology builds on the smooth engagement of a Stage 1 clutch while offering increased torque capacity and improved wear life — the ideal step up for performance street and dual-purpose street/strip applications.

Key Features:

• High-clamp performance pressure plate for increased clamping force
• Pure Kevlar friction material on a steel-backed disc for durability and consistent engagement
• High-torque sprung hub disc assembly for smooth power transfer and drivetrain shock absorption
• Excellent stock-like daily drivability — no harsh on/off engagement
• Designed for street, drag, pulling, and autocross use
• Designed, hand-built, and tested in the U.S.A.

Kit Includes:

• High-clamp pressure plate
• Kevlar friction disc with steel backing and sprung hub assembly
• Release bearing
• Alignment tool

The Spec SF412 Stage 2 is the smart choice for enthusiasts seeking a balance of performance and practicality — whether commuting daily, running autocross weekends, or making passes at the track.