Which is the best air filter

I need a new air filter.I ride mostly on the street.Should I get a Uni,Twin Air,or a K&N?Which one flows the most air?

K&N flows the most air

K&N flows the most air

How do you know that? I doubt any of us have done flow tests on the 3 filters to know this.

I would recommend the UNI and i think its prolly the most popular around here.

im not sure which one is better for airflow, but uni is most popular for off-road and dirt riding conditions, the K&N would be better if you were 100% road

UNI and Twin Air have worked well for me, tried K&N quite a few years ago and found grit in the airbox a couple of times, haven't used them since.

i can tell you k&N absolutely flows more air--- it also flows more dirt.

i would never put one of those on anything i own unless i was racing and O/H the engine after every race. the uni or twin air foams are the way to go. if you run a k&n, check the intake tube after a while. it will be coated with a nice layer of fine dirt-- uni that i use doesnt.

A clean K&N flows the most air, but filters the worst. It should be fine for street use. A foam filter is the best for off-road use. UNI and Twin-air are both good foam filters.

A clean K&N flows the most air, but filters the worst. It should be fine for street use. A foam filter is the best for off-road use. UNI and Twin-air are both good foam filters.

true

Dont use K&N off-road, i have one on my 250L and if im riding in dusty stuff i clean the airbox every 1-2 rides

I used a K&N for about a month, until I found the previously mentioned silt past the filter. IF you will only see pavement, it is the way to go. IF you may see dirt, don't!

I typically stick with the stock filter, but that is just because I have a whole stack of 'em. Really like the Uni for it's sealing lip. Not a huge fan of the Twin-Air. It seems a little thin to me. Not that this effects its filtering abilities, I just wonder if the sidepanel can get enough pressure on the edge to seal as well as the Uni or stocker.

I am going to a 24hr race in a few months. For that race we are using the Ready Racing filters. New one in at each and every pit stop, and throw the old one away.

+1 for UNI

Uni here too. I have nothing to compare it to, but I just got done riding in very dusty conditions and when I took the filter off to clean it there was no dirt to be found on the "clean" side of the airbox. Good enough for me:prof:

I rock the K&N on the road, and on the dirt if there is no dust. No dirt/dust in airbox past the filter. Any chance of dust use the stocker or the others.

I rock the K&N on the road, and on the dirt if there is no dust. No dirt/dust in airbox past the filter. Any chance of dust use the stocker or the others.

I agree, the stock foam filter is excellent, it's free with the purchase of the bike, and it flows just like any other foam filter.

I agree, the stock foam filter is excellent, it's free with the purchase of the bike, and it flows just like any other foam filter.

stock foam air filter?? mine came with a paper element filter.

stock foam air filter?? mine came with a paper element filter.

That's because you've got an L. We are talking about the R's and the big slab of foam mounted sideways behind the left side number plate. The K&N for the R has a good portion of rubber surrounding it that does not sit perfectly in the edging around the airbox. This allows dust and fine particles to pass (unless you put a large amount of grease around the edge). The K&N also flows more air through the filter media, but this is due to the fact that a properly oiled K&N will allow larger particles to pass than a properly oiled foam filter like the OEM or Uni.

I ordered a UNI filter today.Thanks for everyones input.I love this site,lots of info!

You will like the Uni. Nice snug fit around all edges. Before you install, hold the Uni aluminum fram in the box and bend until it fits best.

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