Vortex 120ZB-50 Steel Rear Sprocket 50-Tooth Black

The Vortex 120ZB-50 is a 50-tooth steel rear sprocket designed for motorcycles running a 120-pitch drive chain. Manufactured in the USA by Vortex Racing, this sprocket is precision laser-cut from high-quality chromoly steel and finished with a durable black coating for corrosion resistance and a clean, aggressive appearance.

Vortex Racing has been producing top-tier drivetrain components for road racing, motocross, supercross, and street applications for over two decades. Their steel sprockets are engineered to deliver reliable, long-lasting performance while maintaining precise tolerances for smooth power transfer and consistent chain engagement.

Key Features:

• 50-tooth rear sprocket for tuning acceleration and gear ratio
• 120-pitch chain compatibility — matches standard 120-pitch drive chains
• Black finish for corrosion resistance and sleek aesthetics
• Precision laser-cut from high-strength chromoly steel
• Lightening holes reduce rotating mass without sacrificing structural integrity
• Manufactured in the USA to strict quality tolerances
• Drop-in replacement or performance upgrade over OEM gearing

Increasing rear sprocket tooth count lowers your overall gear ratio, improving low-end torque and acceleration response — ideal for tight circuits or stop-and-go riding. The steel construction offers excellent durability and is a great choice for street and track riders who prioritize longevity over weight savings.