Manufactured in the Netherlands using a special dual-layer foam, formulated for maximum filtration and optimum air flow. 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. Made to fit the factory air box and are a direct replacement for original equipment filters. No need to change carburetor jets or settings. KTM 105 SX/XC 07-11, 125 EXC 04-06, 125 EXC Six Days 03-05, 125 SX/SXS 04-06, 200 EXC 04-07, 200 XC/XC-W 06-07, 250 EXC 04-07, 250 EXC Racing 04-06, 250 EXC Six Days 04-07, 250 EXC-F 07, 250 SX 04-06, 250 SX-F 05-07, 250 SXS 04-06, 250 XC 06-07, 250 XC-F/XCF-W 07, 250 XC-W 06-07, 300 EXC 04-07, 300 MXC 04-05, 300 XC/XC-W/400 EXC 06-07, 400 EXC Racing (3 Hole Air Filter) 04-05, 400 LC-4 (3 Hole Air Filter) 01-04, 400 SX/MXC/EXC (3 Hole Air Filter) 04-05, 400 XC-W/450 EXC 07, 450 SMR 05-07, 450 SX/EXC/MXC 03-06, 450 XC/XC-W 07, 520 SX/MXC/EXC (3 Hole Air Filter) 01-02, 525 SMR 04-06, 525 SX/MXC/EXC/XC/XC-W (3 Hole Air Filter) 03-07, 560 SMR 07, 85 SX 05-12, 85 XC 08-10