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MWR Air Filter for Kawasaki Ninja 400 2018+ / Z400 2019+

MWR Racing Air Filter for the 2018+ Kawasaki Ninja 400 and 2019+ Kawasaki Z400. (Performance version shown) Provide more air to your engine while still filtering out contaminants with the MWR Performance Air Filter. Available in Performance Street or Full Race version. (Performance version shown) Improve your Ninja 400 / Z400's engine performance on the street or track with MRW. (Performance version shown) TST Image Carousel Close

MWR Air Filter for Kawasaki Ninja 400 2018+ / Z400 2019+

Gain improved air flow to your Kawasaki Ninja 400 / Z400 engine and increase your performance on the street or track with an easy to install air filter from MWR.

Available in "Performance" or "Full Race" variations, these MWR air filters flow more air while still providing the high level of engine protection that MWR has become known for. Please note that the Full Race filter flows more air compared to the Performance filter and needs to be maintained more often. It is recommended the Full Race Filter be checked and maintained after each race weekend.


Kawasaki Ninja 400 | 2018, 2019, 2020

Kawasaki Z400 | 2019, 2020

This product is part of our Worx Program!

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SKU MWR-1002
Weight 0.80 LBS
Price: $88.00
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  • Unique shape that enables increased and stable airflow to the engine
  • Available in Performance or Full Race versions*
  • Created with biodegradable filter oil
  • Flows more air than the standard OEM Ninja 400 / Z400 air filter
  • Filter can be washed and regenerated by applying fresh MWR filter oil
  • Comes pre-oiled and ready to install
  • Simple and easy installation


Unlock potential performance by increasing airflow to your Ninja 400 / Z400 engine while still providing top quality engine protection. The unique design from MWR replaces the stock Kawasaki air filter, making this a simple and easy upgrade that can increase your Kawasaki's ability on the track or street. The MWR Air Filter is available in Performance or Full Race variations, enabling you to select the exact air filter for your riding needs. This washable air filter comes pre-oiled with biodegradable air filter oil and is ready to install directly out of the package.

MWR Racing has been creating and developing air filters for almost every racing application for the past 20 years. With experience in Moto GP, SBK, MotoAmerica, Dakar, and much more, MWR Air Filters have stood on top of podiums across the world. Don't let the pros have all the fun, get the same air filters used by top factory teams and unleash your Kawasaki Ninja 400 / Z400.

*Performance Version: The MWR Performance Air Filter should be checked at least once a year (may vary due to your riding environment and frequency) and should be cleaned and re-oiled at that time.

*Full Race Version: The MWR Full Race Air Filter provides the same excellent quality air protection as the Performance, however for a shorter time period. We highly recommend checking the air filter after each race weekend.

  • (1) MWR Air Filter of your choice - either Performance or Full Race

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