Spec Clutch SB13A Aluminum Flywheel

The SPEC SB13A is a precision-engineered aluminum flywheel designed to optimize clutch performance and power delivery in high-performance applications. Manufactured from aircraft-quality billet aluminum, this lightweight flywheel reduces rotational mass for improved throttle response and quicker acceleration while maintaining the structural integrity required for demanding racing environments.

Key Features:

• CNC machined to an exceptional .001" tolerance for perfect balance and true rotation
• Aircraft-quality billet aluminum construction for significant weight reduction
• Replaceable steel friction plate for enhanced clutch bedding and holding power
• Rebuildable design extends service life and reduces long-term costs
• SFI certified for competitive racing applications
• Perfectly flat bedding surface ensures optimal clutch disc contact
• Engineered moment of inertia (MOI) optimizes power-to-acceleration ratio

SPEC flywheels are manufactured to a precision standard ten times tighter than industry norms, eliminating dimensional runout that causes power-robbing vibrations. The replaceable friction plate is formulated from a special steel alloy that enhances friction characteristics and clutch disc longevity. This aluminum flywheel provides the ideal balance between weight reduction for performance gains and sufficient inertia for smooth drivability across various racing disciplines.