Spec Clutch SB662SMG Stage 2 Kevlar Clutch Kit with Sprung Hub

The SPEC SB662SMG Stage 2 Clutch Kit is a high-performance clutch upgrade engineered for enthusiasts who demand more holding power without sacrificing everyday drivability. Featuring a segmented or full-faced pure Kevlar friction disc with steel backing, this kit delivers the smooth, predictable engagement of the Stage 1 while stepping up torque capacity and service life for more demanding driving applications.

The double-sprung hub design incorporates spring cover relieves for added flexibility, while heat-treated internal components provide long-term strength and durability. This SMG-specific kit is purpose-built to work with the Sequential Manual Gearbox, making it a direct, high-performance replacement for the stock clutch assembly.

Key Features:

• Pure Kevlar friction material with steel-backed disc for improved wear resistance and torque capacity
• High-clamp pressure plate for increased clamping force over the stock unit
• Double-sprung hub assembly with spring cover relieves for smooth power transfer and flexibility
• Heat-treated components for superior strength and long-term durability
• Includes throw-out bearing and alignment tool for straightforward installation
• SFI Approved clutch components

Ideal Driving Applications: Street, Drag, Pulling, Autocross

The SPEC Stage 2 sits within SPEC's street/strip range (Stages 1–3+), making it the ideal step-up clutch for mildly to moderately modified vehicles that still see regular street use. It strikes the right balance between aggressive holding power and daily-driver engagement feel.