Vortex 405ZR-39 Red Aluminum Rear Sprocket 520 Pitch 39 Tooth

The Vortex 405ZR-39 is a high-performance CAT5 aluminum rear sprocket designed for serious riders seeking weight savings and improved acceleration. This lightweight racing sprocket is 100 percent CNC manufactured in the USA from specially formulated alloy per Vortex specifications, ensuring precise concentricity and maximum durability.

Key Features:

• 520 pitch with 39 teeth for optimal gearing options
• Red anodized finish with contrasting silver machine cuts
• Lightweight CAT5 aluminum racing sprocket, 100% CNC manufactured in the U.S.A. from specially formulated alloy per Vortex specifications
• Saber tooth grooves and unique tooth design increases sprocket longevity
• Significantly lighter compared to OEM steel sprockets, leading to reduced rotating mass for improved acceleration and handling
• Available in multiple colors with bright silver highlights

Vortex aluminum sprockets are manufactured from the highest quality 7075 T6 aluminum and feature lightening holes to further reduce rotating mass. The patented tooth design and precision CNC machining ensure long service life while delivering the performance advantages of aluminum construction. This sprocket is ideal for sport bikes, track days, and racing applications where every ounce of rotating weight matters.