DescriptionCoarse, open-pore foam catches airborne dirt, grime and sand.Fine open-pore inner foam acts as a second filter to trap the smallest particles while ensuring maximum air passage.Exclusively formulated adhesive withstands repeated cleanings, even with harsh solvents or gasoline.Slightly smaller than stock filters to increase air space around the filter and improve circulation.Fused outer and inner elements prevent dirt and grime from being lodged between layers Unlike Twin Air, this can be a problem with inferior 2-piece designs. Trapped particles can restrict airflow. And if dirt works its way into your engine, a pinheadsized granule will gouge your cylinder, piston and rings like a bullet.Thick, flat foam, greaseless sealing ring ensures maximum contact with your airbox, while acting as a breathable gasket for increased air passage.This Item Fits the Following Applications:2009 Yamaha PW502008 Yamaha PW502007 Yamaha PW502006 Yamaha PW502005 Yamaha PW502004 Yamaha PW502003 Yamaha PW502002 Yamaha PW502001 Yamaha PW502000 Yamaha PW501999 Yamaha PW501998 Yamaha PW501997 Yamaha PW501996 Yamaha PW501995 Yamaha PW501994 Yamaha PW501993 Yamaha PW501992 Yamaha PW50