Spec Clutch SC07A-3 SFI-Certified Billet Aluminum Flywheel with Replaceable Friction Plate

The Spec Clutch SC07A-3 is a precision-machined aircraft-quality billet aluminum flywheel engineered for high-performance street and racing applications. CNC manufactured to an industry-leading .001-inch machine tolerance — ten times tighter than the industry standard of .010 — this flywheel guarantees a perfectly flat seating surface for the clutch disc and exceptional rotational balance, reducing vibration and protecting the engine at high RPM.

Key Features:

• Aircraft-quality billet aluminum construction for maximum strength with reduced rotating mass
• CNC machined to .001-inch tolerance — 10x tighter than the industry standard
• SFI certified for use in sanctioned competitive motorsports environments
• Replaceable steel friction plate made from a friction-enhancing steel alloy formulated for optimum clutch bedding and holding power
• Rebuildable design for long-term serviceability and cost-effectiveness
• Optimized Moment of Inertia (MOI) tuned specifically for the application to maximize throttle response and power delivery
• Provides faster engine revving, reduced drivetrain drag, and quicker throttle response compared to heavier steel flywheels

A flywheel's contribution to clutch performance and power transfer is three-fold: it must provide a consistent, friction-enhancing surface for the clutch disc; deliver the correct rotational inertia to match the vehicle's power characteristics; and maintain true dimensional balance at all RPM levels to eliminate harmful vibrations. The SC07A-3 addresses all three requirements with precision engineering tailored to the specific application.

Spec Clutch flywheels are not a one-size-fits-all solution — each unit is developed and optimized for specific driving environments, whether drag racing, road racing, drifting, time attack, or high-performance street use. All Spec clutch and flywheel products are designed, hand-built, and tested in the USA.