Is this a certified AP Poll[img]i/expressions/face-icon-small-wink.gif[/img] I don't know which one is better. I have k&n's on two of my quads. They both see mud, fine dust and sand. Never had a problem with particles getting beyond the filters. Get what you feel most comfortable with. If something goes wrong[img]i/expressions/face-icon-small-sad.gif[/img] Your the one who will need to have it fixed.

 

i prefer the uni

 

lets make this easy. Go watch a pro race and look at what they are running. Count how many uni or twin air filters you see compared to K@n. if you can find a k@n. If you can't get to the track look on tv at the stickers on the bikes. I bet you see uni and twin air on 90%.