Vortex 611ZB-39 Steel Rear Sprocket 39-Tooth Black

The Vortex 611ZB-39 is a 39-tooth steel rear sprocket finished in satin black, engineered for street and performance motorcycle applications. Designed as a direct OEM replacement or performance upgrade, this sprocket delivers reliable power transfer and extended service life.

Key Features:

• Material: Carbon steel alloy constructed to Vortex specifications for maximum strength and durability
• Finish: Electro-plated satin black finish to resist corrosion and maintain appearance
• Tooth Count: 39 teeth for precise gear ratio tuning
• Patented Tooth Design: Vortex's unique tooth profile increases sprocket longevity and reduces chain wear
• Lightening Holes: Strategically placed cutouts reduce rotating mass without sacrificing structural integrity
• Precision Manufactured: Made in the USA with CNC machining to ensure concentricity and consistent fitment

The 611ZB-39 is part of Vortex Racing's trusted line of steel rear sprockets, offering a durable alternative to aluminum sprockets for riders who prioritize longevity. The black finish provides a clean, aggressive look while the steel construction stands up to the demands of both street and track use.