Vortex 523ZK-54 Aluminum Rear Sprocket 520 Pitch 54-Tooth

The Vortex 523ZK-54 is a 54-tooth, 520-pitch aluminum rear sprocket designed for performance street and track riders who demand precision-manufactured drivetrain components. Part of Vortex Racing's proven 523-series rear sprocket line, this sprocket is CNC-machined in the USA to exact tolerances for guaranteed concentricity and smooth power delivery.

Key Features:

• 520 Chain Pitch – Compatible with standard 520-pitch drive chains
• 54-Tooth Rear Sprocket – Higher tooth count for increased low-end torque and acceleration
• Aerospace-Grade Aluminum Construction – Lightweight design reduces rotating mass for improved throttle response
• Precision CNC Machined – Manufactured in the USA to exacting tolerances for concentricity and durability
• Lightening Holes – Strategically placed cutouts further reduce unsprung weight
• Unique Tooth Profile – Vortex's proprietary tooth design promotes extended sprocket and chain life

Upgrading to a higher-tooth rear sprocket like the 523ZK-54 lowers the overall gear ratio, delivering stronger acceleration and increased low-end power — ideal for tight, technical tracks or aggressive street riding. The 523ZK-54 is a direct bolt-on replacement requiring no modifications for compatible applications.