Enhance the performance of your 2018-23 Kawasaki EX400 Ninja with the K&N KA-4018 air filter. This custom and high-quality air filter is designed to fit perfectly and provide 100% accuracy of fit. It is easy to replace and does not require any drilling, making it a convenient option for your vehicle.

The K&N KA-4018 air filter comes with a 1-year warranty and is authorized by the manufacturer K&N Engineering. It is suitable for use in California and has been tested to ensure that it meets the EPA and Prop 65 standards. This air filter is a perfect fit for your vehicle and is ideal for those who want to enhance the performance of their engine.