Hiflofiltro HFF2019 Dual Stage Racing Foam Air Filter Fits: Kawasaki KX125 87-89, KLX250 90-92, KLX250S 09-13, KX250 87-89, KLX300R 97-10, KX500 87-03, KLX650A/R 93-96 Competition off-road air filters manufactured in the Netherlands using a special dual-layer foam, formulated for maximum filtration and optimum air flow for improved power Coarse open-pore foam catches airborne dirt, grime and sand while the fine open-pore inner foam acts as a second filter to trap the smallest particles Top quality materials and superior construction allow the filter to be used over and over again without any loss of performance