No they have about a zillion K&N decals to their name. You can be sure those rigs have specially modified air filter systems. Minimum being a foam cover...... possibly bought from UnifilterMOTO HEAD said:Does't K&N have about a zillion Baja victories to their name. I was under the understanding that an oiled foam will pass dirt when dirty and required more maintenance.
Diesel Power said:I have to agree with george here. My real-world tests are crude at best, but here's what i did:
I used to have 2 quads, a honda 400ex (sold now) and a honda rancher (still have). i initially ran K&N filters on them until i noticed dust in my intake when i serviced the filters. i always serviced them after every run, cleaned them, let them dry, and then re-oiled them. once i switched to a UNI foam filter, my intakes were clean. granted my dmax doesn't get run is as dustly of conditions, but logic would dictate that if dirt gets through in bad enviro, then some dust will get through in a cleaner enviro. also.
my 2 cents worth.