SPEC SF331-5 Stage 5 Performance Clutch Kit

The SPEC SF331-5 is a Stage 5 performance clutch kit engineered for high-powered Ford applications demanding maximum torque capacity and race-level durability. As SPEC's most aggressive clutch offering, the Stage 5 is purpose-built for drag racing and extreme high-horsepower builds where instantaneous engagement and maximum grip are critical.

SPEC clutch discs feature a full-face, sprung or unsprung hub design (application dependent) with advanced friction material construction. The disc lining is integrally bonded to a steel backing plate for strength under extreme clamp loads and elevated operating temperatures. Hub components are heat-treated for long-term strength and durability.

Key Features:

• Stage 5 race-grade clutch kit — SPEC's highest-capacity single-disc offering
• High-clamp, heavy-duty pressure plate for maximum torque transfer
• Advanced friction disc with integrally bonded steel backing
• Heat-treated hub components for strength and longevity
• SFI Approved construction — every SPEC clutch kit and flywheel is SFI certified
• Compatible with stock or SPEC billet flywheel (application dependent)
• Made in the U.S.A.

SPEC clutches and flywheels are manufactured on-site using advanced processes and tight tolerances. The Stage 5 is recommended for serious drag racing and competition use where maximum torque holding capacity is required. For street or mild track use, consider the Stage 1 through Stage 3+ variants in the SF331 line.