Vortex 313ZB-57 Steel Rear Sprocket 57T Black

The Vortex 313ZB-57 is a 57-tooth steel rear sprocket featuring an electro-plated satin black finish. Engineered to Vortex's exacting standards, this sprocket is manufactured from carbon steel alloy and features a unique, patented tooth profile designed to maximize chain engagement, reduce wear, and extend service life.

Vortex steel rear sprockets are induction-hardened for added durability, while strategically placed lightening holes reduce rotational mass without sacrificing structural integrity. The satin black electro-plating provides corrosion resistance to stand up to the elements over thousands of miles.

Key Features:

• 57-Tooth rear sprocket for modified gear ratio tuning
• Carbon steel alloy construction per Vortex specifications
• Electro-plated satin black finish for corrosion resistance
• Patented tooth design for increased sprocket longevity
• Induction-hardened teeth for extended wear life
• Optimized lightening holes reduce weight while maintaining maximum strength
• Precision manufactured to ensure proper chain alignment and quiet operation

The 313ZB-57 is ideal for riders looking to increase rear wheel torque and low-end acceleration by running a higher tooth count rear sprocket. As with all Vortex sprockets, this unit must be paired with a chain and front sprocket of matching pitch for correct drivetrain operation.