Vortex 523ZK-41 CAT5 Aluminum Rear Sprocket 520 Pitch 41T Black

The Vortex 523ZK-41 is a CAT5 aluminum rear sprocket designed for motorcycles running a 520 pitch chain. Featuring 41 teeth and a striking black anodized finish, this sprocket delivers the precision and durability that Vortex Racing is known for on both the track and the street.

Constructed from a specially formulated CAT5 aluminum alloy to Vortex's own specifications, this sprocket is 100% CNC machined in the USA for exact tolerances and concentric geometry. The result is a sprocket that runs true, transfers power efficiently, and outlasts lesser alternatives. The lightweight aluminum construction reduces rotating mass compared to steel sprockets, contributing to improved throttle response and handling feel.

Key Features:

• CAT5 aluminum construction — lightweight, specially formulated alloy per Vortex specifications
• 520 pitch — compatible with 520 chain systems
• 41 teeth — stock replacement or gearing tuning option
• Black anodized finish with contrasting machined silver accents
• 100% CNC machined in the USA for precise tolerances
• Vortex patented tooth design increases sprocket longevity
• Reduces rotating mass for improved throttle response

The Vortex 523ZK-41 is an ideal upgrade or direct replacement for riders looking to maintain precise gearing, reduce drivetrain weight, and add a race-proven component to their motorcycle's drivetrain.