AIRFILTER YAMAHA YZ450F 10-13 5.5 if you are looking for

if you are looking for a Composite or

meaning that it is Phthalate

and instep sections

X-ring and Z-ring chains

The hard shell 6

AIRFILTER YAMAHA YZ450F 10-13 5.5 if you are looking forTwin Air filters are slightly smaller than stock filters to increase air space around the filter and improve circulation. The resulting increase in air volume around the filter improves circulation within the airbox. More air means more power for your engine. Flow bench tests have proven that Twin Air filters provide increased airflow while reducing the filters tendency to clog. Features Coarse open pore foam catches airborne dirt, grime and sand Fine