On my play bike I have the stock Twin Air and I just added those filter skins that are oiled from PC racing. I like the idea of just peeling one off after riding in dust instead of replacing the entire filter. But this is just my play bike, I have not tested this setup out in the dirt yet but Im curious to see how it performs. I am confident it will work well though, I also have a AFE dryflow filter that I am curious to try. Seems top notch though!