Spec Clutch SC22A Billet Aluminum Flywheel SFI Certified

The SPEC SC22A is a billet aluminum performance flywheel CNC-machined to an industry-leading .001-inch tolerance — ten times tighter than the industry standard of .010. This exceptional precision delivers perfect rotational balance, minimal dimensional runout, and a perfectly flat friction surface for consistent clutch disc bedding, making it an ideal upgrade for street performance and competitive racing environments.

Machined from aircraft-quality billet aluminum, the SC22A is a lightweight flywheel option designed to reduce rotating mass and improve throttle response. Reducing flywheel weight lowers the moment of inertia (MOI), allowing the engine to rev more freely and reach peak power faster — a critical advantage in drag, road race, drift, and autocross applications.

Key Features:

• CNC-machined to .001-inch tolerance for perfect balance and true runout
• Aircraft-quality billet aluminum construction for maximum strength and minimum weight
• SFI certified for use in sanctioned racing environments
• Rebuildable design with a replaceable steel friction plate for long service life
• Replaceable friction plate formulated for optimum clutch bedding and holding power
• Engineered for optimum MOI (moment of inertia) to maximize power delivery and acceleration
• Designed and hand-built in the USA

The SC22A's rebuildable construction means the replaceable steel friction insert can be refreshed without replacing the entire flywheel body, reducing long-term ownership costs. SPEC's extensive R&D process optimizes flywheel weight and dimensions for specific applications, ensuring the right balance between drivability and outright performance.