Hiflofiltro HFF5012 Dual Stage Racing Foam Air Filter Fits: KTM 85 2004, 125 all 98-03, 200 all 98-03, 250 all 98-03, 300 All 98-03, 380 All 98-03, 400 LC-4 2000, 400 LC-4 (1 hole) 01-03, 520 LC-4 2000, 520 LC-4 (1 hole) 01-02, 525 LC-4 (1 hole) 2003 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