Spec Clutch ST915 Stage 5 Clutch Kit Full-Metallic Disc High Clamp

The SPEC ST915 Stage 5 Clutch Kit is engineered for maximum performance in extreme street and racing applications. Featuring a full-metallic friction disc with the highest possible friction coefficient, this clutch delivers uncompromising torque capacity for drivers who demand the absolute limit from their drivetrain. While technically street drivable, the Stage 5 is purpose-built for aggressive performance use and is not intended for daily commuting comfort.

The disc assembly uses a solid 12-rivet hub construction and is fully heat treated for exceptional strength and long-term durability under high-stress conditions. Paired with a high clamp pressure plate, this kit ensures consistent, reliable engagement at the extreme power levels found in drag racing and hard pulling applications.

Key Features:

• Full-metallic friction material — maximum friction coefficient for extreme torque transfer
• High clamp pressure plate — increased clamping force for high-horsepower applications
• Solid 12-rivet hub disc assembly — heat treated for strength and durability
• Includes bearing and installation tool kit — everything needed for a complete install

Recommended Driving Applications: Street (extreme), Drag Racing, Pulling, Autocross

The SPEC Stage 5 is the top of the SPEC performance clutch lineup, designed for builds where maximum holding power takes priority over everyday drivability. If your vehicle sees the track more than the street, the ST915 is the clutch kit built for your needs.