K&N YA-4518XD Replacement Air Filter for Yamaha YZ450F 18-19/YZ250F 19

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 altitude. 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.

Features
• 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
• One Year Limited Factory Warranty