K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration. Features Designed to provide increased horsepower and acceleration Pleated cotton media provides a large filtration area offering low restriction high-capacity and long service intervals Multiple layers of woven cotton gauze media offer excellent filtration Fits directly into OEM airbox with an 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 Specifications Base Outside Diameter: 4.625in (117mm) Top Outside Diameter: 3.5in (89mm) Filter Material: Cotton Gauze Height: 6.75in (171mm) Flange Inside Diameter: 3.625in (92mm) Flange Length: 0.625in (16mm) Washable: Yes Filter Re-Oiling Amount: 1.07oz (32ml) Fits: Yamaha YFZ350 BANSHEE 1987-2006