Spec Clutch SF591 Stage Performance Clutch Kit - 1

The Spec Clutch SF591 Stage 1 Clutch Kit is engineered as a high-performance upgrade for bolt-on naturally aspirated and mildly modified forced induction engines. It delivers stock-like daily drivability with significantly improved holding power and wear characteristics over a factory clutch — making it an ideal choice for street driving, occasional track use, and a wide range of motorsport disciplines.

At the heart of the Stage 1 kit is a high clamp pressure plate paired with an integrally molded carbon Kevlar-based, multi-compound woven organic friction disc. The disc features an integrally bonded steel backing for superior strength under high clamp loads and elevated temperatures, while the high-torque double sprung hub provides flexibility through spring cover relieves and durability via heat-treated components.

Key Features:

• High clamp performance pressure plate for improved torque capacity
• Carbon Kevlar-based multi-compound woven organic friction material
• Steel-backed disc for strength under high clamp loads and heat
• High-torque double sprung hub assembly for smooth, progressive engagement
• Heat-treated hub components for long-term strength and durability
• Includes throwout bearing and alignment tool for straightforward installation
• Street-friendly pedal feel with no harsh on/off engagement

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

The Spec SF591 Stage 1 Clutch Kit offers the perfect balance of performance and everyday usability for drivers who demand more than a stock clutch without sacrificing drivability.