Vortex 641AZB-40 Aluminum Rear Sprocket Black with Blue Accents Sprockets - 40-Tooth

The Vortex 641AZB-40 is a 40-tooth aluminum rear sprocket finished in black anodize with distinctive blue machined accents. Engineered for performance street and track riders, this sprocket is 100% CNC-machined in the USA to precise tolerances, ensuring consistent fitment and reliable power transfer ride after ride.

Key Features:

• 40-Tooth Rear Sprocket — tuned for performance gearing on compatible motorcycles
• Lightweight Aluminum Construction — reduces rotating mass compared to steel sprockets, improving throttle response and acceleration feel
• Black Anodized Finish with Blue Accents — corrosion-resistant finish with machined accent detailing for a premium appearance
• 100% CNC Manufactured in the USA — machined to exacting tolerances for concentricity and quiet operation
• Specially Formulated Aluminum Alloy — per Vortex specifications for optimal strength-to-weight ratio
• Unique Tooth Profile — Vortex's proprietary tooth geometry promotes extended sprocket and chain life

Vortex rear sprockets are a trusted choice for performance street riders and club racers alike. The reduced rotating mass of the aluminum construction aids in putting more power to the pavement, while the anodized finish stands up to the rigors of regular use. Always replace the chain and front sprocket simultaneously when installing a new rear sprocket to ensure even wear and optimal drivetrain performance.