Cowroy
Dont get me wrong, many people ride MX bikes on the trail...especially 250's. The problem with gearing down a MX bike is that they have close range transmissions. Once you gear down an MX bike, your top end speed will decrease significantly. I know this because I ride a geared down MX bike. If I had it to do over, I would have bought a WR. The WR in WR250 stands for Wide Range...it is geared for the trail, a MX bike isnt. If you are riding only tight trails, this may be ok. If you want to run 65 miles an hour down a fire road, your geared down MX bike wont do it. My bike tops out around 50 miles per hour...but it will get there in a hurry. The water cooled 4 stroke trail bikes also have larger radiators to handle the low air flow at low trail riding speeds. Now you decide...