The GReddy Airinx dry dual foam element catches larger particles on the outer edge, keeping the inner area cleaner for longer use. And by not using a wet element, sensitive airflow meters are not contaminated.
Replacement Airinx AY-MB Filter Element (dome shape)
Blue or Yellow
AY-M B - Medium (Dia. 169mm)
AY-S B - Small (Dia. 137mm)