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I acknowledge that the product(s) being purchased () was/were designed and intended for closed course competition use only. The product(s) is/are neither designed nor intended for use on public roads or land and is against Federal and State regulations to do so. By proceeding with this purchase, I , agree to only use the product(s) for closed course competition.

If an ECU tune was purchased, please send your unmodified and undamaged OEM ECU to TST Industries, located at 623 Pleasant St, Lake Helen, FL 32744.

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U.S. customers are offered a free shipping option for orders with a discounted subtotal greater than $150.00 (before taxes applied). The order's shipment destination must reside within the United States of America. The free shipping options still utilize our standard postage providers and 3rd party shipping companies. Does not apply to large items such as exhausts, stands, and bodywork shipping. All terms and conditions that apply to normal orders will continue to apply to orders with a free shipping option.

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An item returned within 30 days of purchase, that includes an accurate RMA#, in a perfectly new, unopened condition, and that complies with our other return policies, will not be charged a restocking fee.

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The most common product related questions are answered in the tabs section on this page. Be sure to carefully read through the "Product Details", "In the Box", and "FAQs" tabs. In addition, a lot of our products have comprehensive videos demonstrating installations and product features. You can find those videos in the "Videos" tab.

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COVERAGE: Our Limited Extended Warranty starts on the date of purchase. It covers all manufacturer defects for our TST Exclusive products. (Products manufactured by us with the exception of our WORX products)
EXPERT HELP: As always our team is here to help. If you’re unsure about this warranty or if your product is eligible, feel free to reach out to us and we can help answer any questions you may have!
PRODUCT ELIGIBILITY: TST will offer our Limited Extended Warranty on all products manufactured by TST Industries.
EASY CLAIMS PROCESS: Simply click the “Contact Us” page and fill out the “Returns Form” to begin the warranty process. Once our team receives your email and initiates the RMA, you can send your product back to us and we will repair/replace the product at no cost as long as a manufacturer defect is found. What qualifies as a manufacturer defect? Check out our Terms and Conditions for some examples!

MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500

  • MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500. (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 Kawasaki's engine performance on the street or track with MRW. (Performance version shown)

MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500

MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500

Gain improved air flow to your Kawasaki's 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.

Make an awesome bundle and include the MWR Biodegradable Cleaner and MWR Biodegradable Oil with your order for proper maintenance of your MWR Air Filter.

Applications:
Kawasaki Ninja 400 | 2018, 2019, 2020, 2021, 2022, 2023
Kawasaki Z400 | 2019, 2020, 2021, 2022, 2023
Kawasaki Ninja 500 | 2024, 2025

This product is part of our Worx Program!

Learn More!
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SKU
2018 - 2023/Ninja 400/Kawasaki
MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500
 
Price: $78.95
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ATTENTION:

If buying this product as part of the Buy Together bundle below, define these options there.

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Buy Together

Make an awesome bundle with your

MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500

MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500 +
MWR Biodegradable Air Filter Oil +
MWR Biodegradable Air Filter Cleaner =
$104.85

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MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500
MWR Air Filter for Kawasaki Ninja 400 / Z400 / Ninja 500
$78.95
MWR Biodegradable Air Filter Oil
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MWR Biodegradable Air Filter Cleaner
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Buy Together For Only $104.85
  • Product Details
  • In the Box
  • Recommended Accessories

Features

  • 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 Kawasaki 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

Description

Unlock potential performance by increasing airflow to your Kawasaki 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 sportbike.

*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
warning

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

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TST Sequential LED Integrated Tail Lights for Yamaha YZF-R7 2022+
TST Sequential LED Integrated Tail Lights for Yamaha YZF-R7 2022+
This light gives my 24 R7 a sleek and stealthy look! TST knows how to do it right. They have great bike accessories and even greater customer service. Always quick to answer my questions about this product and treats me well!
Nicholas Choo
Dec 21, 2024
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