Vortex 617ZR-50 Steel Rear Sprocket 520 Pitch 50 Tooth

The Vortex 617ZR-50 is a steel rear sprocket featuring a 520 pitch chain compatibility and a 50-tooth count. Engineered by Vortex Racing to precise specifications, this sprocket delivers a reliable, long-lasting upgrade over OEM components for street and track riders seeking more aggressive gearing.

Key Features:

• 520 Pitch Chain Compatibility — designed to work seamlessly with standard 520-pitch drive chains
• 50-Tooth Rear Sprocket — provides a taller gear ratio for improved low-end torque and acceleration
• Hardened Carbon Steel Construction — resists wear and delivers consistent power transfer over extended use
• Precision CNC Machined — manufactured to exact tolerances for concentricity and smooth, quiet operation
• Corrosion-Resistant Finish — electro-plated satin coating protects against rust and harsh environmental conditions
• Weight-Reducing Lightening Holes — precision-cut slots minimize rotating mass for improved throttle response and handling
• Vortex Patented Tooth Design — unique profile increases sprocket longevity and chain engagement efficiency
• Made in the USA — manufactured domestically to Vortex's exacting quality standards

The Vortex ZR-series steel rear sprocket is ideal for riders who demand durability and performance without frequent replacement intervals. Its hardened steel construction outlasts aluminum alternatives, making it an excellent choice for high-mileage street riders and aggressive track day use alike.