Vortex 628ZR-55 520 Aluminum Rear Sprocket 55-Tooth Silver

The Vortex 628ZR-55 is a 55-tooth, 520-pitch aluminum rear sprocket engineered for performance street and stunt riding applications. Machined from 7075-T6 aerospace-grade aluminum, this sprocket delivers an exceptional strength-to-weight ratio, reducing rotating mass and contributing to improved throttle response and acceleration.

At 55 teeth, this sprocket falls in the extended tooth-count range popular among stunt riders and performance enthusiasts seeking increased low-end torque and quicker acceleration off the line. The silver anodized finish is the standard finish for Vortex sprockets in the 55-tooth and larger sizes.

Key Features:

• 7075-T6 aluminum construction — lightweight yet highly durable
• 55-tooth count — ideal for aggressive acceleration and stunt applications
• 520 chain pitch compatible
• Silver anodized finish for corrosion resistance
• Vortex patented tooth design for increased sprocket longevity
• 100% CNC manufactured in the USA
• Reduced rotating mass improves power delivery to the rear wheel

Vortex Racing is a U.S.-based manufacturer with a long history of producing top-quality motorcycle drivetrain components for road racing, motocross, supercross, and street performance use. Every sprocket is built to tight tolerances and tested in real-world racing environments.