Air filter for quad :| HONDA TRX 400-500 EX 2000-2007| DOUBLE-LAYER FILTERS!!! UNLIKE THE CHEAPER OR| AT A SIMILAR PRICE OF FILTERS!!!| Filter construction| the outer white sponge catches coarse dirt getting into the air box (mud, sand)|| the second blue sponge is designed to stop remaining impurities that have passed through the first layer of the filter while ensuring optimal air flow || exceptional quality and therefore durability allow the filter to be washed multiple times a specially profiled edge ensures perfect sealing between the filter and the air box much more durable and better filtering than slightly cheaper filters available on the market|| MOTO AIR air filters are manufactured in the NETHERLANDS, which guarantees the highest quality. Made according to the latest technologies. Filters used by the best MX and ENDURO TEAMS in the world.|