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 Height: 2.25in (57mm) Filter Material: Cotton Gauze Outside Length: 7in (178mm) Outside Width: 3.75in (95mm) Filter Re-Oiling Amount: 0.41oz (12ml) Washable: Yes Fits: Yamaha TT250R 1993-1997 TT350 1986-1987 TTR250 1998-2016 WR250R 2008-2012 2014-2020 WR250X 2008-2012