Vortex Racing V4 44 Tooth 520 Rear Sprocket - Black

The next generation of Vortex aluminum rear sprockets, V4 builds on the long-running CAT5 sprocket platform with a lighter, more aggressive design. Reduced rotating mass improves acceleration, throttle response, handling, and overallagility. Ideal for street, track, and performance applications.

• Excellent concentricity for smooth, quiet operation and efficient power transfer
• Precision-machined from high-strength 7075-T6 aluminum
• 10-15% Lighter than CAT5
• Manufactured in the USA

Upgrade your motorcycle’s drivetrain with the Vortex Racing V4 44-Tooth 520 Rear Sprocket, designed to deliver responsive performance for street riding, track use, and other powersports applications. Building on the proven Vortex CAT5 sprocket platform, the V4 features a lighter, more aggressive design that helps reduce rotating mass for improved acceleration, throttle response, handling, and overall agility. Its black finish provides a clean, performance-focused appearance that complements a wide range of motorcycles.

• Excellent concentricity supports smooth, quiet operation and efficient power transfer


• Precision-machined from high-strength 7075-T6 aluminum for durability and reduced weight


• Approximately 10% to 15% lighter than the previous CAT5 design


• 44-tooth configuration with 520 chain compatibility


• Manufactured in the USA

The Vortex Racing V4 sprocket is engineered for riders who want dependable chain engagement and efficient power delivery without unnecessary rotating weight. Precision machining helps maintain consistent sprocket alignment and smooth drivetrain operation, while the high-strength aluminum construction balances performance and durability. The 44-tooth gearing can be used to tailor final-drive characteristics according to motorcycle setup and riding preferences.
Before installation, confirm fitment for your motorcycle, chain size, mounting pattern, and gearing requirements. The Vortex Racing part number vtx642AZKV4-44 identifies this black V4 rear sprocket and should be referenced when verifying compatibility. Professional installation is recommended to ensure correct torque, alignment, and chain adjustment.

Features:

• 44-tooth rear sprocket for 520 chain applications

• Lightweight V4 design reduces rotating mass

• Precision-machined from high-strength 7075-T6 aluminum

• Approximately 10% to 15% lighter than the CAT5 sprocket

• Excellent concentricity for smooth, quiet drivetrain operation

• Supports efficient power transfer and responsive handling

• Black finish

• Manufactured in the USA

• Designed for street, track, and performance applications