Vortex 839ZK-51 Aluminum Rear Sprocket 51 Tooth

The Vortex 839ZK-51 is a precision-engineered aluminum rear sprocket featuring 51 teeth, designed for high-performance motorcycles and racing applications. This lightweight racing sprocket is manufactured to exact specifications using 100% CNC machining in the USA, ensuring superior concentricity and durability.

Key Features:

• 51-tooth aluminum construction with specially formulated alloy per Vortex specifications
• 100% CNC manufactured for precise tolerances and perfect fit
• Lightweight design reduces rotating mass for improved acceleration and performance
• Unique patented tooth design increases sprocket longevity and chain engagement
• Lightening holes strategically placed to reduce weight while maintaining strength
• Special finish to prevent corrosion and resist wear
• Made in the USA with premium materials

Vortex Racing sprockets are the choice of professional racers and performance enthusiasts who demand the highest quality components. The reduced rotating mass helps put more power to the pavement, while the precision manufacturing ensures smooth, reliable operation mile after mile.