Kawasaki OEM Air Filter Ninja EX250 08-12 EX300 13-14 11013-0020 Official Kawasaki Product. Part Number: 11013-0020 Model Fit: EX250 08-12, EX300 13-14 Use Factory Kawasaki replacement parts for best value and vehicle specific quality. Only Kawasaki OEM replacement parts are recommended by Kawasaki Motor Company.