The OEM air filter is total crap. Its flimsy and it ripped during the first cleaning. Yes, I was a bit rough when cleaning it, but in the past I have cleaned many foam filters and been fine. Unfortunately, my only option at the time was a direct replacement that is the same crap. Strangely, the GYT-R filter that is on the Yamaha site right now is wrong for the bike. The local dealer had one, but it was completely different, even though the part numbers are correct. It looked much nicer than the OEM filter, but it was just not the right one. I am going to look into a UNI or Twin Air or ?? I am just looking for opinions from people who have used them. What do you guys like best? I am not sure about K&N for the extreme dust that our Norther Michigan trails get. At the dunes, K&N is fine, but I don't think they are enough for the very fine dust that we see up north in the summer. Thanks!