K&N KT-1217 is an high performance air filter for motorcycle KTM Duke 125/390 - Husqvarna Svartpilen - Vitpilen 125/401 to increase engine horsepower, filtration quality and lifetime.
It installs without modification instead of the original air filter inside the air box, the protective mesh of aluminum coated resin protects the structure of the filter material while maintaining direct airflow. The board is designed to ensure maximum tightness and the filtering part consists of cotton gauze soaked first quality of oil to keep the impurities and debris on the outside of the filter, increasing the effectiveness of the filtering. The filter is washable and resistant to moisture: even if completely wet is not necessary to replace the filter. You buy once, it cleans and lubricates repeatedly (up to 25 washes) and lasts more than 10 normal air filters offering much better performance and high quality filtration without any modification at the carburetion value!