I ride in Western Kentucky, and I'm considering buying a new air filter for my 400ex. I don't know which one is the best. In the summers, the weather is usually hot and dry, but in the winters, it's cold and wet. Please help if you can. Thanks in advance.

 

Iowa is very similar. I have a unifilter and it works fine. It is cheaper than a K&N and it is pretty much bulletproof.

 

you are right uni is by FAR BETTER than k&n i owned a k&n &even charged it let alot of sand get by .

 

Get the uni.. the greese grouve stops dust.