K&N KA-9018 Replacement Air Filter for 2023 Kawasaki Z900RS 948 All Models is 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 and reusable, most are pre-oiled and ready to ride.