Vortex 491AZK-50 Aluminum Rear Sprocket 50-Tooth Black Anodized

The Vortex 491AZK-50 is a high-performance 50-tooth aluminum rear sprocket featuring a black hard-coat anodized finish. Engineered for serious street and track riders who demand precision, durability, and measurable performance gains over stock components.

Key Features:

• Aerospace-grade aluminum construction — significantly lighter than OEM steel sprockets, reducing rotating mass for improved acceleration and throttle response
• Black hard-coat anodized finish — provides enhanced corrosion resistance and extended sprocket life compared to standard silver anodized options
• 100% CNC machined with Vortex's patented saber tooth groove design, engineered to increase sprocket longevity and improve chain engagement
• 50-tooth rear sprocket — increases low-end torque and acceleration by raising the overall gear ratio
• Race-proven performance — Vortex components are tested and trusted by professional racing teams worldwide

The Vortex 491AZK-50 is a direct upgrade for riders looking to fine-tune their gearing for improved off-the-line performance. The lightweight aluminum design delivers a noticeable reduction in rotating mass compared to stock steel sprockets, translating to sharper throttle response and quicker acceleration. The black anodized hard-coat finish adds durability and a aggressive look to complement any build.