I've got a stock KFX400 that has a k&n air filter in it. I'm lookin to get some more top speed out of it and I know that if I go up a tooth on the front sprocket I'll gain speed. About how many mph would I gain and how much low end power would I be losing?

 

im not sure how much mph you will gain but you will be losing a lot of low end power

 

use this link to get an idea of what it might do
http://home.earthlink.net/~gellett/ltz400.htm