Vortex 639ZK-49 Steel Rear Sprocket 49-Tooth Black

The Vortex 639ZK-49 is a 49-tooth steel rear sprocket finished in a corrosion-resistant black electro-plate coating. Engineered for street and performance motorcycle applications, this sprocket delivers the strength and durability needed for demanding riding conditions while maintaining precise chain engagement.

Key Features:

• 49-Tooth Rear Sprocket — allows for gearing customization to suit your riding style and application
• Carbon steel alloy construction — precision-manufactured per Vortex specifications for exceptional strength and longevity
• Black electro-plated finish — satin black coating provides corrosion resistance and a clean, aggressive appearance
• Unique tooth profile — Vortex patented tooth geometry promotes smooth chain engagement and extended sprocket life
• Precision tolerances — induction-hardened and machined to exacting standards for concentricity and quiet operation
• Direct OEM replacement fitment — no modifications required for installation

The Vortex 639ZK-49 rear sprocket is an ideal upgrade or replacement for riders looking to fine-tune final drive gearing. A higher tooth count rear sprocket increases low-end acceleration and torque delivery at the expense of top-end speed. Vortex Racing sprockets are 100% manufactured in the USA and are trusted by street riders and racers alike.