K&N Air Filter – Kawasaki Ninja 500 / Ninja 400 / Z400 / Eliminator 500 (KA-4018)

Keep your engine breathing clean with this direct-fit K&N air filter. Designed as a drop-in replacement, the KA-4018 installs in minutes with no modifications required and is built to K&N's washable, reusable filtration standard — meaning you can clean and re-oil it rather than replacing it every service interval.

Fits:

Kawasaki Ninja 400 (2018 and up)

Kawasaki Ninja 500 (2024 and up)

Kawasaki Z400

Kawasaki Eliminator 500

Always verify fitment with your specific year and model before ordering.

Why K&N?

K&N filters are engineered to flow more air than a standard paper filter while still protecting your engine. For a bike like the Ninja platform — already a strong performer — a clean, high-flow filter helps maintain the throttle response and efficiency the engine was designed to deliver.

Part Number: KA-4018

OEM Cross Reference: 11013-0767

This is the same filter we use in the shop. If you're unsure whether this is the right fit for your bike, reach out before ordering and we'll confirm it for you.

Click below for removal and installation 

https://lilchubcustomsbikes.com/blogs/news/how-to-remove-amp-replace-the-air-filter-on-a-2024-2026-kawasaki-ninja-500