Vortex 154ZB-39 Steel Rear Sprocket 39-Tooth Black

The Vortex 154ZB-39 is a 39-tooth steel rear sprocket engineered for performance motorcycle applications. Built to Vortex Racing's exacting standards, this sprocket is manufactured from a carbon steel alloy formulated specifically to Vortex specifications, delivering exceptional strength and durability under demanding riding conditions.

The satin black electro-plated finish provides reliable corrosion resistance while giving the sprocket a clean, stealthy appearance. Vortex's patented tooth profile design sets this sprocket apart from generic alternatives — the unique geometry promotes smoother chain engagement and extends overall sprocket longevity beyond what standard designs offer.

Key Features:

• 39-tooth rear sprocket for fine-tuning gear ratios
• Carbon steel alloy construction per Vortex specifications
• Electro-plated satin black finish for corrosion protection
• Patented unique tooth design for increased longevity and smooth chain engagement
• Precision manufactured to ensure concentricity and consistent performance
• Direct OEM-style fitment — no modifications required

The Vortex 154ZB-39 is an ideal replacement or performance upgrade for riders looking to maintain reliable power transfer with a durable, corrosion-resistant steel sprocket.