Spec Clutch SB151 Stage Performance Clutch Kit - 1

The Spec Clutch SB151 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 a meaningful upgrade in holding power and longevity, the Stage 1 is the ideal step up from a worn OEM clutch without sacrificing the smooth, predictable engagement drivers expect on the street.

At the core of the Stage 1 kit is a high clamp pressure plate paired with a steel-backed, multi-compound woven organic disc. The carbon Kevlar-based organic lining is integrally molded for durability and smooth engagement characteristics, while the steel backing provides strength under high clamp loads and elevated temperatures. The high-torque sprung hub features a double-spring design with spring cover reliefs for added flexibility, and heat-treated components for long-term strength and durability.

Kit Includes:

• High clamp performance pressure plate
• Steel-backed multi-compound woven organic clutch disc
• High-torque double-sprung hub assembly
• Release bearing
• Clutch alignment tool

Recommended Driving Applications:

• Street / Daily Driving
• Drag Racing
• Drifting
• Road Racing
• Rallye
• Pulling
• Autocross

All SPEC clutch kits and flywheels are SFI approved and designed, built, and tested in the USA. The Stage 1 is the entry point of SPEC's performance lineup, with Stage 2, 2+, 3, 3+, 4, and 5 kits available for higher-output applications.