Twin Air - Air Filter YZ450F & YZ250F

TwinAir filters, dual stage air filters, are constructed from two layers of high-flow, open-pore foam that are bonded together to provide maximum filtration and superior airflow. The coarse-foam outer shell with a fine-foam inner core, resulting in a one-piece design that permits continuous airflow.

Twin Air filters are slightly smaller than stock filters, to increase the air space around the filter for improved circulation. They are constructed using a special adhesive that is unaffected by repeated cleaning, harsh solvents or gasoline. Each filter contains a thick, greaseless, flat foam sealing ring that insures maximum contact with your airbox, acting as a breathable gasket. They are made to fit in stock airboxes.

Twin Air Air Filter features:

• Coarse 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 ensures glue seams will not break down
• Thick, flat foam, greaseless sealing ring ensures maximum contact with your airbox, while acting as a breathable gasket for increased air passage
• Fused outer and inner elements prevent dirt and grime from being lodged between layers, unlike Twin Air, this can be a problem with inferior two-piece designs. Trapped particles can restrict airflow. And if dirt works it's way into your engine, a pinhead-sized granule will gouge your cylinder, piston and rings like a bullet