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. Fits: Honda CRM250 89-93, Super XR250 97-04, XR250 Baja All, XR250R 87-06, XR400 96-06, XR600 87-02, XR650L 93-13.