Spec Clutch SF82A Aluminum Flywheel SFI Certified CNC Billet

The SPEC SF82A is a precision-engineered billet aluminum flywheel designed for performance and competitive racing applications. CNC machined to an exceptional .001-inch tolerance—ten times tighter than the industry standard of .010—this flywheel delivers perfect rotational balance and a perfectly flat clutch disc bedding surface. The SF82A carries SFI certification, meeting the strict safety standards required for sanctioned motorsport competition.

Key Features:

• Aircraft-quality billet aluminum construction for a lightweight, reduced-inertia option ideal for high-revving and racing applications
• CNC machined to .001-inch tolerance — 10x more precise than the industry standard — ensuring perfect balance and a flat friction surface
• Replaceable steel friction plate made from a friction-enhancing steel alloy specially formulated for optimum clutch bedding and holding power
• Rebuildable design extends service life and reduces long-term cost
• SFI certified for use in sanctioned competitive and racing environments
• Engineered for zero dimensional runout, eliminating vibration that can rob power and damage engine components
• Optimized Moment of Inertia (MOI) dimensions researched and developed by SPEC for maximum performance output

The flywheel plays a critical role in clutch performance and longevity. It provides the friction surface for the clutch disc, controls rotational inertia to influence the power-to-acceleration ratio, and must maintain true balance at all RPM ranges to ensure smooth engine operation. The SPEC SF82A aluminum flywheel addresses all three of these demands with race-proven precision manufacturing, making it an ideal upgrade for performance street and track use.