Vortex 604ZB-46 Black Steel Rear Sprocket 46-Tooth

The Vortex 604ZB-46 is a black steel rear sprocket featuring a 46-tooth count, designed for motorcycles requiring the 604 carrier pattern. Built to Vortex Racing's exacting standards, this sprocket is manufactured from carbon steel alloy and finished with an electro-plated satin black coating for corrosion resistance and a clean, aggressive appearance.

Vortex Racing is a U.S.-based manufacturer trusted by AMA Superbike and Motocross competitors for delivering race-proven drivetrain components with tight tolerances and superior longevity. Every Vortex steel sprocket is precision-engineered to ensure concentricity and smooth chain engagement, reducing drivetrain wear and improving power transfer to the rear wheel.

Key Features:

• 46-tooth rear sprocket for tunable gearing configuration
• Carbon steel alloy construction per Vortex specifications for maximum strength
• Electro-plated satin black finish for corrosion protection and appearance
• Vortex patented unique tooth design increases sprocket longevity
• 100% CNC manufactured in the USA to precise tolerances
• Designed for use with matching-pitch chain — verify chain pitch compatibility before installation

Upgrading to a higher tooth-count rear sprocket like the 46T increases low-end torque and acceleration response by lowering the final drive ratio. This is a popular performance modification for riders seeking improved throttle response and quicker launches.