AIRFILTER YAMAHA YZ450F 10-13 5.5 meaning that it is Phthalate

meaning that it is Phthalate

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AIRFILTER YAMAHA YZ450F 10-13 5.5 meaning that it is PhthalateTwin 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