Vortex 639ZK-53 CAT5 530 Rear Sprocket 53-Tooth Black Aluminum

The Vortex 639ZK-53 is a 53-tooth, 530-pitch black anodized aluminum rear sprocket from Vortex Racing's CAT5 Road series. Engineered for performance street and track use, this sprocket is precision CNC-machined in the USA from high-grade aluminum alloy to exacting tolerances, delivering a lightweight alternative to OEM steel sprockets without sacrificing durability.

Key Features:

• 53 Teeth — taller rear gearing for improved low-end torque and acceleration
• 530 Chain Pitch — compatible with standard 530-pitch drive chains
• Black Anodized Finish — hard-anodized for corrosion resistance and aggressive appearance
• Aerospace-Grade Aluminum Construction — significantly reduces rotating mass compared to steel sprockets
• Vortex Patented Tooth Design — unique tooth profile engineered for extended sprocket longevity and smooth chain engagement
• 100% CNC Manufactured in the USA — precision-machined for concentricity and quiet operation
• Specially Formulated Alloy — alloy blend developed to Vortex's proprietary specifications

Vortex rear sprockets are a trusted choice for both road racers and performance street riders looking to optimize gear ratios and reduce drivetrain weight. The 639ZK-53 is a direct bolt-on replacement designed for specific motorcycle fitments — verify compatibility with your model before purchasing.