Spec Clutch SA591 Stage Performance Clutch Kit - 1

The Spec Clutch SA591 Stage 1 Clutch Kit is engineered for bolt-on naturally aspirated engines and mildly modified forced induction applications. Designed to deliver stock-like daily drivability with significantly improved wear characteristics and holding power, it's the ideal upgrade for drivers who want a performance clutch without sacrificing streetability.

At the heart of the Stage 1 kit is an integrally molded carbon Kevlar-based, high-performance organic friction lining that provides smooth, predictable engagement and excellent service life. The lining features an integrally bonded steel backing plate engineered to maintain structural integrity under high clamp loads and elevated operating temperatures. The disc hub is double-sprung with spring cover relieves for added flexibility, and all hub components are heat-treated for long-term strength and durability.

The kit includes a high-clamp pressure plate, the steel-backed multi-compound woven organic disc assembly with sprung hub, a release bearing, and an installation tool kit — everything needed for a complete clutch replacement.

Key Features:

• Carbon Kevlar-based organic friction lining for smooth engagement and long life
• Integrally bonded steel-backed disc for strength under high clamp loads and heat
• Double-sprung hub with heat-treated components for flexibility and durability
• High-clamp performance pressure plate
• Includes release bearing and installation tool kit
• Designed for stock and mildly modified forced induction engines
• SFI-approved components

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

SPEC Clutch kits are designed, hand-built, and tested in the USA. The Stage 1 is SPEC's entry-level performance upgrade and the ideal choice for street-driven vehicles that see occasional track or spirited driving duty.