Vortex 523ZR-51 Black Aluminum Rear Sprocket 520 Pitch 51 Tooth

The Vortex 523ZR-51 is a 51-tooth, 520-pitch black anodized aluminum rear sprocket designed for motorcycle applications where weight savings and performance are a priority. Manufactured in the USA by Vortex Racing, this sprocket is a popular choice for street, track, and powersports riders seeking a high-quality OEM replacement or performance upgrade.

Vortex Racing rear aluminum sprockets are precision-manufactured to exact specifications, ensuring true concentricity for smooth, vibration-free operation. The black anodized finish provides an aggressive look while offering a degree of corrosion protection. Lightening holes throughout the sprocket body reduce rotating mass, which contributes to improved throttle response and acceleration feel.

Key Features:

• Chain Pitch: 520
• Tooth Count: 51 teeth
• Material: Lightweight aluminum construction
• Finish: Black anodized for corrosion resistance and clean appearance
• Lightening holes to reduce rotating mass and improve throttle response
• CNC machined for precise concentricity and consistent fitment
• Made in the USA by Vortex Racing

Vortex Racing is a U.S.-based manufacturer with over 15 years of experience producing top-quality motorcycle racing components for Motocross, Supercross, Road Racing, and Flat Track. Each component is manufactured to tight tolerances and tested with feedback from professional race teams worldwide. The 523ZR-51 rear sprocket is ideal for riders looking to fine-tune their gearing or replace a worn sprocket with a proven, race-proven component.