Vortex 592ZK-37 520 Black Aluminum Rear Sprocket 37-Tooth

The Vortex 592ZK-37 is a 37-tooth, 520-pitch black aluminum rear sprocket engineered for performance street and track applications. Precision-manufactured from 7075 T6 aerospace-grade aluminum, this sprocket delivers the lightweight durability demanded by serious riders and racing teams.

Key Features:

• 520 Chain Pitch — Compatible with 520-pitch drive chains
• 37 Teeth — Optimized tooth count for tuned gearing ratios
• 7075 T6 Aluminum Construction — CNC machined to tight tolerances for a perfectly concentric sprocket and smooth, quiet power delivery
• Black Anodized Finish — Anodized for corrosion resistance with a clean, aggressive look
• Reduced Rotating Mass — Significantly lighter than OEM steel sprockets, improving throttle response and acceleration
• Patented Tooth Design — Vortex's unique tooth geometry extends sprocket and chain life by minimizing wear and drivetrain drag
• Mud-Clearing Grooves — Between-tooth grooves help expel debris and keep the drivetrain running cleanly
• 100% CNC manufactured in the USA to Vortex specifications

The 592ZK-37 is a direct-fit rear sprocket replacement and gearing upgrade option for compatible motorcycles. Swapping to a higher-tooth-count rear sprocket improves low-end torque and acceleration, while a lower tooth count raises top-end speed — making this 37-tooth unit a popular choice for fine-tuning final drive ratios on the street or track.