Vortex 839C-65 Aluminum Rear Sprocket 65 Tooth

The Vortex 839C-65 is a lightweight aluminum rear sprocket featuring 65 teeth and the iconic CAT5 design. Precision CNC-manufactured in the USA from aerospace-grade aluminum alloy, this racing sprocket delivers optimal power transfer while significantly reducing rotational mass compared to steel alternatives.

Key Features:

• 65-tooth aluminum rear sprocket with CAT5 design pattern
• 100% CNC manufactured in the USA for precision fitment
• Aerospace-grade aluminum alloy to Vortex specifications
• Silver anodized finish prevents corrosion and oxidation
• Unique tooth profile design increases sprocket longevity
• Patented sprocket design for enhanced performance
• Lightweight construction reduces rotational weight

Vortex aluminum sprockets are designed for racing and high-performance applications where weight savings are critical. For optimal performance and longevity, chain should be cleaned and properly tensioned every 300-400 miles. All Vortex sprockets are manufactured to the tightest tolerances and tested by professional race teams worldwide.