Vortex 641ZK-54 Aluminum Rear Sprocket 520 Pitch 54-Tooth Black

The Vortex 641ZK-54 is a 54-tooth, 520-pitch aluminum rear sprocket finished in black anodize, designed for performance street and track motorcycle applications. Built to precise tolerances using a specially formulated aluminum alloy per Vortex specifications, this sprocket delivers the concentricity and durability demanded by competitive riders.

Key Features:

• 520 Chain Pitch – Compatible with standard 520-pitch drive chains
• 54 Teeth – Higher tooth count for increased low-end torque and acceleration
• Black Anodized Finish – Corrosion-resistant anodized coating for lasting appearance and protection
• Lightweight Aluminum Construction – Reduces rotating mass compared to steel sprockets, improving throttle response
• Lightening Holes – Strategically placed cutouts further reduce unsprung weight
• Vortex Patented Tooth Design – Unique tooth geometry increases sprocket longevity and chain engagement
• 100% CNC Manufactured in the USA – Machined to precise tolerances for concentricity and consistent fit

Vortex Racing rear sprockets are a preferred choice among racers and performance street riders for their combination of light weight, strength, and precision manufacturing. The 641ZK-54 is part of Vortex's extensive rear sprocket lineup, available in multiple tooth counts to suit a wide range of gearing preferences.