Spec Clutch SF523F-3 Stage 3 Plus Performance Clutch Kit

The SPEC Stage 3 Plus (Stage 3+) Clutch Kit is SPEC's flagship single-disc performance clutch, engineered for high-powered street and competition vehicles that demand serious torque capacity without sacrificing everyday drivability. Unlike puck-style race clutches, the Stage 3+ uses a full-faced carbon semi-metallic friction disc that delivers confident engagement and a more forgiving pedal feel — making it equally at home on a daily commute or at the drag strip.

The carbon semi-metallic friction material provides an outstanding combination of long service life, a high friction coefficient, and predictable engagement characteristics in a single package. The high-torque disc hub is double-sprung with spring cover reliefs for added flexibility under load, and all hub components are heat-treated for enhanced strength and long-term durability.

Key Features:

• Full-faced carbon semi-metallic friction disc — superior life, friction coefficient, and drivability vs. puck-style designs
• High-clamp performance pressure plate for maximum clamping force
• Double-sprung high-torque hub with spring cover reliefs for flexibility
• Heat-treated hub components for strength and durability
• Bearing and installation tool kit included
• Proudly manufactured in the U.S.A.

Intended Use: Street, Drag Racing, Autocross, Road Racing, Rally, Drifting, and Pulling

SPEC clutches are manufactured under strict tolerances using advanced friction materials and methods. The Stage 3+ is the ideal upgrade for enthusiasts who need proven race-level torque capacity while retaining the street manners required for regular driving.