Spec Clutch SF331-9 Stage Performance Clutch Kit - 1

The Spec Clutch SF331-9 is a Stage 1 performance clutch kit engineered for enthusiasts who demand reliable power transfer with smooth street manners. This complete clutch assembly features an integrally molded carbon-kevlar based organic lining that delivers smooth engagement while maintaining excellent service life under demanding conditions.

Key Features:

• High-performance organic disc material with integrally bonded steel backing for strength under high clamp loads and elevated temperatures
• 225mm (8.875 inch) full-face disc design for maximum friction surface area
• Unsprung hub configuration optimized for dual-mass flywheel applications
• High-clamp diaphragm-style pressure plate for improved torque capacity
• 20-spline input shaft with 0.875 inch diameter for precise engagement
• SFI approved for safety and performance compliance

Designed for street, drag racing, drifting, road racing, rally, and autocross applications, the SF331-9 offers the perfect balance between performance and daily drivability. This kit is designed for use with OEM dual-mass flywheels or compatible SPEC billet flywheels. The carbon-kevlar organic lining provides superior grip without the harshness of metallic clutches, making it ideal for both spirited driving and track use.