I'm new to doo looking at 2012 etec summit just wondering what track size 154 or 163 im use to the 15" wide tracks. I do about half my riding in the mountians and half on praires.
If the 155 RMK provided you all the track you needed, a 154 Summit will be as equally good.
If you are a big guy and ride endless days off powder, in the steep and deep, go with a 163. A 163 is a little more track to spin and manouver in the trees though.
I am a not a big guy at all and almost considered a 163 because the new XP's are very easy to handle and control.
A 154 is an all around good track length. You can boondock and climb with it and never get left behind.