Vortex 491AZB-45 CAT5 Aluminum Rear Sprocket 45-Tooth Blue Anodized

The Vortex 491AZB-45 is a 45-tooth CAT5 aluminum rear sprocket finished in a striking blue anodize. Engineered for performance-oriented street and track riders, this sprocket is 100% CNC-machined in the USA from a specially formulated aluminum alloy developed to Vortex's precise specifications.

Key Features:

• Lightweight aluminum construction reduces rotating mass for improved throttle response and acceleration
• Blue anodized finish provides corrosion resistance and a distinctive appearance
• Saber tooth groove design — Vortex's patented tooth profile extends sprocket service life by reducing wear
• 100% CNC manufactured in the U.S.A. for tight tolerances and consistent quality
• 45-tooth rear sprocket — increases low-end torque and acceleration compared to lower tooth-count sprockets
• Designed for OEM replacement or suitable 520-size chain and sprocket conversions

Vortex Racing sprockets are trusted by racers and enthusiasts alike for their durability, precision, and weight savings. The 491AZB-45 is part of Vortex's proven CAT5 aluminum rear sprocket lineup, offering an ideal balance of performance and longevity for both street and competition use.