K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. Designed to provide increased horsepower and acceleration Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals Multiple layers of woven cotton gauze media offers excellent filtration Fits directly into OEM air box with application specific sealing bead ensuring a precise fit No fuel management modifications are required to obtain increased performance Washable & reusable, most are pre-oiled and ready to ride!