Vortex 491ZK-47 Black 47-Tooth Aluminum Rear Sprocket

The Vortex 491ZK-47 is a 47-tooth black hardcoat aluminum rear sprocket engineered for motorcycle racing and performance street applications. Built to Vortex's exacting standards, this sprocket delivers the ideal balance of lightweight performance and long-lasting durability.

Key Features:

• Lightweight CAT5 aluminum construction reduces rotating mass for improved throttle response and acceleration
• Black hardcoat anodized finish provides corrosion resistance and a aggressive appearance
• 100% CNC machined in the USA for precise tolerances and concentricity
• Specially formulated alloy per Vortex specifications for maximum strength-to-weight ratio
• Vortex patented unique tooth design increases sprocket longevity and reduces chain wear
• 47 teeth for tuned gearing ratio

Vortex rear sprockets are the choice of racers and performance riders worldwide. The 491ZK-47 is a direct bolt-on replacement that upgrades your drivetrain with a precision-crafted, race-proven component made right here in the United States.