K&N YA-4518XD High-Flow Original Lifetime Engine Air Filter - YAMAHA YZ450F 449CC

Engineered to provide increased horsepower and acceleration Designed for quick foam or filter servicing after 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 Filter element is pre-oiled and ready to ride