Spec Clutch SH431 Stage Performance Clutch Kit - 1

The Spec Clutch SH431 Stage 1 Clutch Kit is a high-performance upgrade engineered for drivers who demand reliable power transfer on the street and at the track. Built around an integrally molded carbon Kevlar-based organic disc lining, this kit delivers smooth, progressive clutch engagement with an extended service life compared to standard OEM clutches.

The friction disc features an integrally bonded steel backing plate that maintains structural integrity under high clamp loads and elevated operating temperatures. The double-sprung hub design incorporates spring cover relieves for added flexibility, while heat-treated internal components ensure lasting strength and durability across a wide range of driving conditions.

Key Features:

• High clamp pressure plate for increased torque holding capacity over stock
• Steel-backed, multi-compound woven organic disc for smooth engagement and long service life
• Double-sprung hub assembly with heat-treated components for strength and flexibility
• Includes release bearing and alignment tool for straightforward installation

Designed Driving Styles:

• Street
• Drag
• Drift
• Road Race
• Rallye
• Pulling
• Autocross

The SPEC Stage 1 is the ideal entry point into SPEC's performance clutch lineup — offering noticeably improved clamping force and durability while retaining a comfortable, daily-driver-friendly pedal feel. Designed, hand-built, and tested in the U.S.A., every SPEC clutch kit is manufactured to exacting tolerances for dependable performance.