Vortex 839AZOV4-38 Aluminum Rear Sprocket 38T 520 Pitch Orange/Black Anodized

The Vortex 839AZOV4-38 is a lightweight, high-performance aluminum rear sprocket engineered for sport and street motorcycle applications. Manufactured by Vortex Racing, this sprocket features a precision-machined 6061-T6 aluminum construction that dramatically reduces unsprung rotational mass compared to stock steel sprockets, contributing to quicker acceleration and more responsive handling.

Key Features:

• Tooth Count: 38 teeth
• Chain Pitch: 520
• Material: 6061-T6 billet aluminum — lightweight and durable
• Finish: Hard anodized in orange and black for corrosion resistance and a distinctive appearance
• Precision CNC machined for accurate tooth profile and consistent chain engagement
• Hard anodized surface treatment extends wear life and resists corrosion
• Lightening cutouts reduce overall weight while maintaining structural integrity
• Direct OEM replacement bolt pattern for straightforward installation

Vortex sprockets are manufactured in the USA and are a popular upgrade among sport bike and track day enthusiasts seeking performance gains without sacrificing reliability. The 839AZOV4-38 is part of Vortex's VTX series and is designed to work with a standard 520 pitch drive chain.