Who makes the best reusable replacement air filters? I've heard that K&N's don't filter as well as a foam filter such as Twin Air or Uni. Any thoughts? Will I have to rejet? Thanks.

 

I run a K&N on my modded 200 Trailblazer. I took my cylinder off to get it ported and could not believe how nice the cylinder looked. It was real nice. I have ran that filter since day one. I ride on the trails almost every weekend in the spring and summer, Lots of coal hills and some sand. I would not run something that has not been proven to work. It comes down to everyones prefrence. I ran a uni filter on my Banshee and was happy with it. I just like the K&N.

 

K&N's work great. Just keep up regular cleanings and oilings. Just like the rest of your machine, take care of it, and it'll last a long, long time.


Ken

 

Do you have to rejet after changing the filter?

 

Probably. I'm not that familiar with the 500. Maybe someone will pipe in. If nothing else, make sure you're on the rich side before installing it. Do a plug reading.


Ken

 

When I first got my K&N, everyone told me that I don't have to rejet. So, I never did and never had any problems. When I changed my plug, it looked perfect.

The main thing about the K&N filters is to keep them oiled. The oil is what traps the dirt. As long as it's oiled, it's all good.

 

I did have to rejet but it may be different with a 4 stroke. I had to go up from a 130 to a 145. Now with all the mods Im at a 210. Just shows how much mods can change the jetting.

 

I have one of each on my quads and dont see a lot of differance in them both filter good and flow better than stock.The UNI was about half the price of the K&N.I have a UNI on the boys Yamaha and it seems to keep water out better(he has a habit of getting in too deep).On the $stroke I didnt have to rejet with the K&N.

 

Excuse my ignorance, but I'm not too familiar with making mods to the engine itself, for example clutch kits, rejetting, etc, etc.... I have a 700 Twin, and I am thinking of getting a K&N air filter for it. Will I have to "rejet" the engine? If so, what does it entail? Something I can do myself, or do I need to buy more parts to rejet? Thanks in advance. I guess the only way to lean is to ask.

 

If you do have to re-jet it wont take any more than the $3.50 it costs to buy the bigger jet. Most likely you should not have to re-jet the 700.