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

The Vortex 592ZB-37 is a 520-pitch, 37-tooth black anodized aluminum rear sprocket engineered for serious street and track riders. Precision-manufactured by Vortex Racing in the USA, this sprocket delivers the performance and durability that top-level competitors demand.

Vortex aluminum rear sprockets are CNC machined from high-strength 7075 T6 aerospace-grade aluminum, then hard anodized in a jet black finish for corrosion resistance and a clean, aggressive appearance. The result is a sprocket that is significantly lighter than OEM steel units, reducing rotating mass for improved throttle response and acceleration.

Key Features:

• 520 pitch — compatible with standard 520 chain applications
• 37 teeth — rear sprocket tooth count
• Black anodized finish — hard anodized for corrosion and wear resistance
• CNC machined from 7075 T6 aluminum — aerospace-grade strength with minimal weight
• Vortex patented tooth design — optimized geometry for smooth chain engagement and extended sprocket life
• Lightening pockets — strategically placed cutouts further reduce rotating mass
• Mud-clearing grooves between teeth help keep the drivetrain clean and efficient
• Manufactured to tight tolerances for precise concentricity and smooth power delivery
• 100% CNC manufactured in the USA

Replacing a heavy OEM steel sprocket with a Vortex aluminum unit is one of the highest-impact, most cost-effective performance upgrades available for any motorcycle drivetrain. The reduced rotational mass translates directly to quicker acceleration and more responsive handling.