K&N Air Filter Yamaha YZ450F 2018-19, YZ250F 2019

K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitudes. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air flow with excellent filtration. • Engineered to provide increased horsepower and acceleration • Designed for quick foam or filter servicing after the initial install • Specifically designed with special media and dry foam insert for maximum off-road protection • Developed to run without the foam for increased track performance or with the foam for a boost in filter endurance on the trails • Fits directly into the OEM air box with application-specific sealing ensuring a precise fit • Unoiled foam pre-filter is easy to clean and re-use • The filter element is pre-oiled and ready to ride • One-Year Limited Warranty