Vortex 775BZK-39 Black Steel Rear Sprocket 39-Tooth

The Vortex 775BZK-39 is a black steel rear sprocket featuring 39 teeth, engineered for motorcycle riders who demand precision, durability, and consistent performance on the street or track. Built to Vortex's exacting standards, this sprocket is manufactured from a carbon steel alloy and finished with an electroplated satin black coating for corrosion resistance and a clean, aggressive appearance.

Key Features:

• 39-tooth rear sprocket — optimized gearing for balanced acceleration and top-end performance
• Black electroplated finish — satin black corrosion-resistant coating for long-lasting protection and appearance
• Carbon steel alloy construction — formulated to Vortex specifications for maximum strength and wear resistance
• Vortex patented tooth design — unique profile engineered to extend sprocket longevity and reduce chain wear
• Lightening holes — strategically placed to reduce rotating mass without sacrificing structural integrity
• Case-hardened teeth — increased surface hardness for extended service life under demanding conditions
• 100% manufactured in the USA — produced at Vortex's facility to the tightest dimensional tolerances

Vortex Racing is a U.S.-based manufacturer with a proven track record in Motocross, Supercross, Road Racing, Flat Track, and Minibike competition. Every Vortex sprocket is tested with feedback from professional race teams worldwide, making the 775BZK-39 a trusted choice for both competitive racers and performance-minded street riders.