Spec Clutch SC62A Aluminum Flywheel SFI-Certified Billet

The Spec Clutch SC62A is a precision-engineered billet aluminum flywheel designed for high-performance street and racing applications. CNC-machined to an industry-leading .001-inch tolerance — ten times tighter than the industry standard of .010 — this flywheel delivers exceptional rotational balance and a perfectly flat clutch disc bedding surface. Every SPEC aluminum flywheel carries SFI certification, making it a trusted choice in competitive motorsport environments.

The flywheel body is machined from tempered aerospace-grade aluminum — either 6061-T6 or 2024-T3 — providing maximum strength at the lowest possible weight. A 1/4-inch thick replaceable steel friction plate made from 1050 high-carbon alloy ensures outstanding durability and compatibility with a wide range of friction disc materials. The friction plate is secured using aerospace-grade fasteners or stainless steel rivets, selected for superior strength and corrosion resistance.

Key Features:

• CNC-machined to .001-inch tolerance — 10x tighter than industry standard
• Aircraft-grade billet aluminum construction (6061-T6 or 2024-T3)
• Replaceable 1050 high-carbon alloy steel friction plate for long service life
• Reduces rotating mass for faster revving, improved throttle response, and reduced engine drag
• SFI-certified for competitive and high-performance applications
• Rebuildable design — replacement components and rebuild service available
• Secured with aerospace-grade fasteners or stainless steel rivets
• Engineered to eliminate dimensional runout and harmful vibration at high RPM
• Designed and manufactured in the USA

SPEC billet aluminum flywheels are recommended for highly modified street or racing vehicles, as well as mildly modified street cars that can benefit from reduced rotating mass without sacrificing daily drivability. Compared to a stock cast steel flywheel, aluminum flywheels are typically half the weight, resulting in quicker engine response and more efficient power transfer. The Moment of Inertia (MOI) is optimized through extensive research and development to best match your drivetrain's specific performance demands.