Vortex Racing V4 45 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 45-tooth 525 rear sprocket, part number vtx195ZKV4-45. Developed from the proven Vortex CAT5 platform, the V4 features a lighter, more aggressive design that helps reduce rotating mass. The result is improved acceleration, sharper throttle response, enhanced handling, and greater overall agility for street, track, and performance riding applications.

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


• Precision-machined from high-strength 7075-T6 aluminum for dependable performance


• 10–15% lighter than the previous CAT5 design to help reduce rotating weight


• Black finish provides a clean, performance-oriented appearance


• Manufactured in the USA

Designed for use with 525 chain systems, this Vortex Racing rear sprocket delivers the precision and durability expected from a performance-focused drivetrain component. Its accurately machined tooth profile supports consistent chain engagement, while the lightweight aluminum construction helps optimize handling and responsiveness without sacrificing strength for demanding riding conditions. The V4 is an excellent choice for riders seeking a direct performance upgrade for both road and track motorcycles.
This Vortex Racing V4 rear sprocket fits 2013–2019 BMW S1000RR models. Confirm your motorcycle’s year, chain size, tooth count, and drivetrain specifications before installation. Professional installation is recommended, and the chain and front sprocket should be inspected whenever the rear sprocket is replaced to help ensure proper alignment and reliable operation.

Features:

• 45-tooth rear sprocket for 525 chain applications

• Vortex Racing V4 design based on the proven CAT5 platform

• 10–15% lighter than CAT5 to reduce rotating mass

• Precision-machined 7075-T6 aluminum construction

• Excellent concentricity for smooth, quiet operation

• Efficient power transfer and improved drivetrain response

• Black finish

• Manufactured in the USA

• Fits 2013–2019 BMW S1000RR models

Fitment:
BMW S1000RR Base 2013
BMW S1000RR Base 2014
BMW S1000RR Base 2015
BMW S1000RR Base 2016
BMW S1000RR Base 2017
BMW S1000RR Base 2018
BMW S1000RR Base 2019