depends on mods, but with my 22's and the other mods I have, the stock gearing setup(13/40) seems to be the best compromise. 12/40 seemed too low for wide open areas, and 14 was taller than I liked for technical trails, and too tall for pulling busted up 2 strokes out of the woods after they blow up. It depends on your own riding style and where you ride. If you like to go fast in a straight line all the time go with 14/40(nothing higher than that with a stock motor) or 12/40 if it's mostly slower riding with a lot of corners and acclelerating. If you're like me and do just about everything just stick with the 13/40 gearing.