Spec Clutch SC86A Billet Aluminum Flywheel SFI Certified

The Spec Clutch SC86A is a high-performance billet aluminum flywheel engineered for street high-performance and racing applications. Precision CNC-machined to an industry-leading .001-inch tolerance — ten times tighter than the industry-standard .010 — this flywheel delivers perfect rotational balance and a consistently flat seating surface for the clutch disc, reducing vibration and protecting your drivetrain at high RPM.

Aircraft-Quality Aluminum Construction:

• Body machined from tempered aircraft-quality billet aluminum (6061-T6 or 2024-T3) for maximum strength at the lowest possible weight
• Approximately half the weight of a comparable stock cast steel flywheel
• Replaceable 1050 high-carbon alloy steel friction plate — 1/4-inch thick and formulated for superior clutch bedding and holding power with any friction disc material
• Friction plate secured with aerospace-grade fasteners or stainless steel rivets for exceptional strength and corrosion resistance
• Heat-treated, pressed-on ring gear secured with Grade 10 fasteners for long-term durability
• Rebuildable design — replacement friction plates and rebuild services are available
• SFI Certified for competitive and racing environments

Reducing rotating mass with the SC86A aluminum flywheel promotes faster engine revving, quicker throttle response, and less parasitic drag compared to heavier steel units. The optimized Moment of Inertia (MOI) helps maximize power delivery and acceleration, making this flywheel an ideal upgrade for modified street cars, drag racing, road racing, drift, autocross, and time attack applications.