Vortex Racing V4 44 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 final-drive performance with the Vortex Racing V4 44-tooth 525 rear sprocket, part number vtx454ZKV4-44. Designed as the next generation of Vortex aluminum rear sprockets, the V4 builds on the proven CAT5 platform with a lighter, more aggressive profile. Reduced rotating mass helps improve acceleration, throttle response, handling, and overall agility for street riding, track use, and other performance applications.

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


• Precision-machined from high-strength 7075-T6 aluminum for durability and consistent 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 dependable chain engagement and precise drivetrain operation. Its 44-tooth configuration is designed for motorcycles using a 525 chain, making it a practical choice for riders seeking responsive performance and reduced unsprung and rotating weight. Precision machining helps maintain accurate tooth alignment and concentricity, supporting smooth operation throughout the sprocket’s service life.
This Vortex Racing sprocket fits select Kawasaki motorcycles, including the 1994–1997 ZX900 Ninja ZX-9R, 2002–2005 ZX1200 Ninja ZX-12R, and 2017 ZR900 Z900 and Z900 ABS. Verify motorcycle year, model, chain size, tooth count, and drivetrain compatibility before installation. Professional installation is recommended to ensure correct alignment, torque, and chain adjustment.

Features:

• 44-tooth rear sprocket for 525 chain applications

• V4 design with reduced rotating mass

• Precision-machined 7075-T6 aluminum construction

• 10–15% lighter than the Vortex CAT5 sprocket

• Excellent concentricity for smooth, quiet operation

• Efficient power transfer and responsive drivetrain performance

• Black finish

• Manufactured in the USA

• Fits select Kawasaki Ninja ZX-9R, Ninja ZX-12R, Z900, and Z900 ABS models

Fitment:
Kawasaki Z900RS Base 2018
Kawasaki ZR900 Z900 Base 2017
Kawasaki ZR900 Z900 Base 2018
Kawasaki ZR900 Z900 Base 2019
Kawasaki ZR900 Z900 ABS Base 2017
Kawasaki ZR900 Z900 ABS Base 2018
Kawasaki ZR900 Z900 ABS Base 2019
Kawasaki ZR900 Z900 ABS Base 2020
Kawasaki ZR900 Z900 ABS Base 2021
Kawasaki ZR900 Z900 ABS Base 2022
Kawasaki ZR900 Z900 ABS Base 2023
Kawasaki ZR900 Z900 ABS Base 2024
Kawasaki ZR900 Z900 ABS Base 2025
Kawasaki ZR900 Z900 SE Base 2022
Kawasaki ZR900 Z900 SE Base 2023
Kawasaki ZR900 Z900 SE Base 2024
Kawasaki ZR900 Z900 SE Base 2025
Kawasaki ZR900 Z900RS Base 2018
Kawasaki ZR900 Z900RS Base 2019
Kawasaki ZR900 Z900RS Base 2020
Kawasaki ZR900 Z900RS Base 2021
Kawasaki ZR900 Z900RS Base 2022
Kawasaki ZR900 Z900RS Base 2023
Kawasaki ZR900 Z900RS Base 2024
Kawasaki ZR900 Z900RS Base 2025
Kawasaki ZR900 Z900RS CAFE Base 2018
Kawasaki ZR900 Z900RS CAFE Base 2019
Kawasaki ZR900 Z900RS CAFE Base 2020
Kawasaki ZR900 Z900RS CAFE Base 2021
Kawasaki ZR900 Z900RS CAFE Base 2022
Kawasaki ZR900 Z900RS CAFE Base 2023
Kawasaki ZR900 Z900RS CAFE Base 2024
Kawasaki ZR900 Z900RS CAFE Base 2025
Kawasaki ZR900 Z900RS SE Base 2022
Kawasaki ZR900 Z900RS SE ABS Base 2024
Kawasaki ZR900 Z900RS SE ABS Base 2025
Kawasaki ZX1200 Ninja ZX-12R Base 2002
Kawasaki ZX1200 Ninja ZX-12R Base 2003
Kawasaki ZX1200 Ninja ZX-12R Base 2004
Kawasaki ZX1200 Ninja ZX-12R Base 2005
Kawasaki ZX900 Ninja ZX-9R Base 1994
Kawasaki ZX900 Ninja ZX-9R Base 1995
Kawasaki ZX900 Ninja ZX-9R Base 1996
Kawasaki ZX900 Ninja ZX-9R Base 1997