Vortex 720ZK-57 Rear Sprocket Pitch Aluminum Sprockets - 520 57-Tooth

The Vortex 720ZK-57 is a 520-pitch aluminum rear sprocket with 57 teeth, engineered for sport and performance motorcycle applications. Vortex Racing is a U.S.-based manufacturer trusted by professional race teams worldwide, producing drivetrain components held to the tightest industry tolerances.

Key Features:

• CNC machined from 7075 T6 aerospace-grade aluminum for exceptional strength-to-weight ratio
• 520 pitch compatible — must be paired with a 520-pitch front sprocket and chain
• 57-tooth rear sprocket for fine-tuned gear ratio customization
• Precision-machined tooth profile for smooth chain engagement and optimal power transfer
• Reduced rotating mass compared to OEM steel sprockets for improved throttle response
• Anodized finish for corrosion resistance and long-term durability
• Unique tooth geometry designed for reliable chain hold and clean release

The Vortex 720ZK-57 rear sprocket is an ideal upgrade for riders looking to adjust their final drive ratio, improve low-end acceleration, or replace worn OEM gearing with a race-proven component. Front and rear sprockets must always match chain pitch — verify your chain pitch before ordering.