Spec Clutch SF331-4 Stage Performance Clutch Kit - 1 with Carbon Kevlar Organic Disc

The Spec Clutch SF331-4 Stage 1 Clutch Kit is engineered for drivers who demand reliable, high-performance clutch engagement without sacrificing everyday drivability. At the heart of this kit is an integrally molded carbon kevlar-based high-performance organic lining that delivers smooth, progressive engagement along with outstanding service life. The lining features a steel backing that is integrally bonded directly to the friction material, providing superior strength under high clamp loads and elevated operating temperatures.

The disc hub is double-sprung with spring cover relieves, allowing for improved flexibility and dampening of driveline shock. Heat-treated internal components further enhance overall strength and long-term durability. The included high-clamp pressure plate delivers increased torque capacity over stock, making this kit a strong upgrade for performance-oriented street driving as well as a wide variety of motorsport applications.

Key Features:

• Carbon kevlar-based organic lining for smooth engagement and extended disc life
• Steel-backed, multi-compound woven organic material for strength under high clamp loads and heat
• High-clamp pressure plate for increased torque holding capacity over OEM
• Double-sprung hub with spring cover relieves and heat-treated components for flexibility and durability
• Bearing and installation tool kit included for a complete installation

Intended Use:

• Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

The Spec SF331-4 Stage 1 is the ideal entry-level performance clutch upgrade for enthusiasts who split time between daily street driving and occasional track or off-road use, delivering a noticeable improvement over a stock clutch without the aggressive pedal effort of higher-stage competition units.