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Vortex Racing V4 43 Tooth 525 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 43-tooth 525 rear sprocket, part number vtx826CZKV4-43. Designed as the next generation of Vortex aluminum rear sprockets, the V4 builds on the proven CAT5 platform with a lighter, more aggressive design. Reduced rotating mass can help improve acceleration, throttle response, handling, and overall agility for street, track, and performance applications.


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

  • Precision-machined from high-strength 7075-T6 aluminum for durability and reliable performance

  • 10–15% lighter than the Vortex CAT5 sprocket design

  • Black finish provides a clean, performance-focused appearance

  • Manufactured in the USA


The Vortex Racing V4 rear sprocket is engineered for riders seeking responsive power delivery without unnecessary rotating weight. Its precision construction supports consistent chain engagement and dependable operation under demanding riding conditions. The 43-tooth configuration is suited to applications requiring a balanced combination of acceleration and top-end performance, while the 525 chain size supports compatibility with motorcycles designed for that drivetrain specification.
Feature: Brand: Vortex Racing
Feature: Series: V4
Feature: Part Number: vtx826CZKV4-43
Feature: Sprocket Type: Rear
Feature: Tooth Count: 43 teeth
Feature: Chain Size: 525
Feature: Material: 7075-T6 aluminum
Feature: Finish: Black
Feature: Application: Street, track, and performance motorcycles
Feature: Country of Manufacture: USA

Features:

  • Excellent concentricity for smooth, quiet operation and efficient power transfer
  • Precision-machined from high-strength 7075-T6 aluminum
  • 10–15% lighter than the Vortex CAT5 design
  • Black finish for a clean performance appearance
  • 43-tooth rear sprocket for 525 chain applications
  • Manufactured in the USA