Spec Clutch SC82A Billet Aluminum Flywheel SFI Certified

The SPEC SC82A is a precision-engineered billet aluminum flywheel designed for high-performance street and racing applications. Machined from aircraft-quality billet aluminum, this flywheel delivers a significant weight reduction compared to stock steel units — helping reduce drivetrain inertia for faster engine revving, quicker throttle response, and improved acceleration.

What sets SPEC flywheels apart from the competition is their industry-leading CNC machining tolerance of ±.001" — ten times tighter than the industry-standard .010" tolerance. This precision manufacturing process guarantees a perfectly flat seating surface for the clutch disc and true rotational balance at all RPM levels, eliminating the harmful vibrations and power losses associated with dimensional runout.

Key Features:

• Constructed from aircraft-quality billet aluminum for maximum strength-to-weight ratio
• CNC machined to a ±.001" tolerance — 10x tighter than industry standard
• Features a replaceable steel friction plate specially formulated for optimal clutch bedding and holding power
• Rebuildable design extends service life and reduces long-term cost
• SFI certified for competitive and sanctioned racing environments
• Optimized moment of inertia (MOI) for improved power-to-acceleration ratio
• Reduces engine drag and enables faster rev response vs. heavier steel flywheels

SPEC flywheels are engineered and developed for specific driving environments rather than as a universal fit solution. Each flywheel is designed with carefully researched dimensions and weights to optimize MOI for the target application — whether that's autocross, drag racing, road racing, street performance, or pulling. The SFI certification makes this flywheel suitable for use in sanctioned competitive events where safety compliance is required.