I am looking for more low end out of my '99 warrior and am wondering if changing sprockets would accomplish this. If so would it make a noticable difference and what sizes should I change to?

 

If you drop one on the front it should give you more low end.

 

What would it do if I go up one rear sprocket also? Will this do to much or not enough to notice?

 

I believe to get the same effect as dropping one on the front, you add 2 or 3 on the rear. I've never changed to a different rear sprocket, always changed the front. I don't know what the gain would be with 1 in the rear. Sorry.

 

Airtime,
It is not recommended to use a c/s sprocket smaller than 12 teeth due to the stress imposed at the sharp angle of the chain. Since the stock sprocket is a 13T, you could go down one tooth if you wish, at the expense of top end. You could also run 20" rear tires which would give you shorter gearing.There is a formula for determining the various ratios in changing either or both sprockets, but I don't know what it is.
Mike300EX-99 is probably about right on the rear sprocket info. 2 teeth bigger would probably approximate the same gearing as 1 tooth smaller on the c/s but more difficult to change & way more money.

 

Go to www.sidewindersprockets.com and they have a gear ratio chart there.

 

A warrior is already geared to low. Going down in the front will only cause you to have to shift more. Try going up one. The quad has the power, especially if you have a pipe on it. If you are running 20" tires then go down one in the back also. Good Luck.