Twin Air Air Filter - KTM 250/300 1990/1997 360 1995/1997Twin Air Filter's design, high quality materials and superior construction deliver unbeatable performance and protection and make Twin Air Filters the hands down choice of more World & National Champions than all other filters combined. FEATURES Coarse open pore foam catches airborne dirt, grime and sand. Thick, flat foam, greaseless sealing ring ensures maximum contact with your airbox, while acting as a breathable gasket for increased air passage.