Vortex 628ZR-51 Black Aluminum Rear Sprocket 51-Tooth

The Vortex 628ZR-51 is a 51-tooth black anodized aluminum rear sprocket designed for high-performance motorcycle applications. Engineered and manufactured in the USA by Vortex Racing, this sprocket delivers the precision, durability, and weight savings demanded by competitive riders and serious street enthusiasts alike.

Key Features:

• Lightweight aluminum construction — reduces rotating mass for improved throttle response and acceleration
• 100% CNC manufactured in the USA — machined to exacting tolerances for consistent, reliable fitment
• Specially formulated alloy per Vortex specifications — optimized balance of strength and weight
• Black anodized finish — hard-coat anodizing provides corrosion resistance and a durable, aggressive appearance
• Vortex patented tooth design — unique tooth profile engineered to extend sprocket longevity and improve chain engagement
• 51-tooth rear sprocket — higher tooth count lowers final drive ratio for increased low-end torque and improved acceleration

Vortex Racing sprockets are tested on the track with direct feedback from top professional race teams worldwide, ensuring every component meets the demands of both racing and street riding. The 628ZR-51 is an ideal upgrade or replacement for riders looking to fine-tune their gearing for more aggressive acceleration characteristics.