Vortex 528ZB-40 528 Steel Rear Sprocket 40-Tooth Black

The Vortex 528ZB-40 is a 40-tooth steel rear sprocket designed for 528 pitch drive chains. Finished in an electro-plated satin black to resist corrosion, this sprocket is manufactured from carbon steel alloy to Vortex's exacting specifications, delivering extended service life over standard OEM chainwheels.

Vortex's proprietary tooth profile and patented sprocket design set it apart from competing rear sprockets, reducing wear on both the sprocket and chain for a longer-lasting drivetrain. Every sprocket is 100% CNC machined in the USA to tight tolerances, ensuring precise chain engagement and smooth power transfer.

Key Features:

• 528 pitch rear sprocket — 40 teeth
• Carbon steel alloy constructed to Vortex specifications
• 100% CNC manufactured in the USA
• Electro-plated satin black finish for corrosion resistance
• Patented unique tooth design for increased sprocket longevity
• Drilled lightening holes on most applications to reduce rotating mass

The 528ZB-40 is an ideal OEM replacement or performance upgrade for riders seeking durable steel construction with a clean blacked-out appearance. Always replace the front sprocket and chain simultaneously when installing a new rear sprocket to ensure even wear and optimal drivetrain performance.