Hiflofiltro HFF5018 Dual Stage Racing Foam Air Filter Fits: KTM 85 SX/XC 2013, 125 EXC 12-13, 150 SX/XC 11-13, 200 EXC/XC-W 12-13, 250 SX/XC/XC-W 11-13, 250 SX/SXS-F 2013, 250 EXC/EXC-F 12-13, 250 XC-F/XCF-W 12-13, 350 SX/SXS-F/EXC-F/XC-F/XCF-W 11-13, 450 SX-F/SXS-F/EXC/SMR/XC-W ('12) 11-12 and more 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