Spec Clutch SMG001 Stage Performance Clutch Kit - 1 Organic Full-Face Sprung Hub

The Spec Clutch SMG001 Stage 1 Clutch Kit is a high-performance upgrade clutch system engineered for drivers who demand strong grip and smooth engagement across a wide range of driving conditions — from daily street driving to competitive motorsports. This single-disc, full-face clutch kit features a carbon Kevlar-based organic lining and a high-clamp pressure plate for confident power transfer and long service life.

The organic friction disc lining is integrally molded with a bonded steel backing, providing exceptional resistance to heat and high clamp loads without sacrificing street manners. The double-sprung hub design incorporates spring cover reliefs for smooth, progressive engagement, while heat-treated hub components deliver the strength and durability required for demanding performance use.

Key Features:

• Carbon Kevlar-based organic lining for smooth engagement and extended service life
• Integrally bonded steel-backed disc for strength under high clamp loads and elevated temperatures
• High-clamp pressure plate for increased torque holding capacity
• Multi-compound woven organic friction material for consistent, predictable feel
• Double-sprung hub with spring cover reliefs for drivetrain vibration damping and flexibility
• Heat-treated hub components for long-term strength and durability
• Includes bearing and installation tool kit
• Disc diameter: 8.500 in. | Input shaft diameter: 1.031 in. | Input spline count: 23

Suitable Driving Disciplines: Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross

Spec Clutch designs and hand-builds all of its clutch systems in the USA, applying advanced fabrication processes and strict tolerances to deliver a product that performs equally well on the street and the track.