Hiflofiltro HFF5013 Dual Stage Racing Foam Air Filter Fits: KTM 85 SX/XC 05-12, 105 SX/XC 04-10, 125 2-Strokes 04-06, 200 2-Strokes 04-07, 250 2&4-Strokes/except SX 04-07, 300 2-Strokes 04-07, 400 LC-4 3-Hole 01-04, 450 SX 03-06, 450 EXC/XC 03-07, 520/525 LC-4 3-Hole 01-06, 530 EXC 06-07, 625/660SMC 08-10 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