Twin Air Air Filter - Honda CRF110F 2019-20Twin 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.