Vortex 491AZB-43 Black 43-Tooth 520-Pitch Aluminum Rear Sprocket

The Vortex 491AZB-43 is a 43-tooth, 520-pitch aluminum rear sprocket finished in a black anodized coating. Engineered for sport and performance motorcycle applications, this sprocket is precision-manufactured from a specially formulated aluminum alloy to deliver an exceptional balance of light weight and long-term durability.

Key Features:

• Lightweight aluminum construction — reduces rotating mass for improved acceleration response
• 100% CNC manufactured in the USA to the tightest tolerances for superior concentricity
• Specially formulated alloy per Vortex specifications for optimal strength-to-weight performance
• Black anodized finish provides corrosion resistance and a clean, aggressive appearance
• Vortex patented tooth design reduces friction and drag while extending sprocket longevity
• 520 chain pitch compatibility
• 43-tooth rear sprocket for stock or custom gearing configurations

Vortex has been manufacturing high-performance racing components in the USA since 1995, with direct feedback from professional race teams worldwide informing every design decision. This sprocket is an ideal upgrade over heavy OEM steel units, helping reduce drivetrain rotating weight and sharpen throttle response.