Vortex 839AZBV4-40 Aluminum Rear Sprocket 40-Tooth

The Vortex 839AZBV4-40 is a lightweight aluminum rear sprocket engineered for motorcycle racing and high-performance street riding. Featuring a 40-tooth configuration, this sprocket is part of Vortex Racing's trusted 839 series, designed to deliver precise power transfer and reduced drivetrain weight.

Key Features:

• 100% CNC manufactured in the USA for consistent, precision tolerances
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Anodized finish to resist corrosion and provide long-lasting color retention
• Unique tooth design engineered to increase sprocket longevity and reduce chain wear
• Lightweight construction reduces rotating mass, improving acceleration, deceleration, and directional changes
• 40-tooth rear sprocket for tunable gearing performance

Vortex Racing sprockets are a top choice among racers and performance riders who demand reliability and precision from every component. The 839AZBV4-40 offers a direct upgrade over OEM sprockets with its race-proven design and American craftsmanship.