K&N performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your motorcycle, ATV, or Side-By-Side vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world's toughest race tracks, so we can bring the highest level of performance for your journey. Join the millions of customers who have saved money and improved performance by upgrading to K&N filtration. Fitment Information: 2018-2021 HUSQVARNA Svartpilen 401; 2018-2021 HUSQVARNA Vitpilen 401; 2017-2021 KTM 125 Duke; 2021 KTM 200 Duke; 2021 KTM 250 Adventure; 2020-2021 KTM 390 Adventure; 2020 HUSQVARNA Svartpilen 200; 2020 HUSQVARNA Svartpilen 250; 2017-2020 KTM 390 Duke; 2017-2019 KTM 250 Duke