Vortex 839AZR-39 Aluminum Rear Sprocket 39-Tooth

The Vortex 839AZR-39 is a high-performance aluminum rear sprocket featuring 39 teeth, engineered for riders who demand both durability and weight savings. This racing-grade sprocket is designed to reduce rotating mass and improve power transfer to the rear wheel.

Key Features:

• Lightweight aluminum construction reduces unsprung weight for improved handling
• 100% CNC manufactured in the USA for precise fitment and quality
• Specially formulated aluminum alloy per Vortex specifications for optimal strength-to-weight ratio
• Unique patented tooth design increases sprocket longevity and chain life
• 39-tooth configuration for versatile gearing options
• Precision-machined teeth ensure smooth chain engagement and reduced wear

Vortex Racing sprockets are the preferred choice of racers and performance enthusiasts who require maximum durability without the weight penalty of steel sprockets. The advanced tooth profile design helps maintain chain tension and extends the service life of both the sprocket and drive chain.