Most mountain bikers changing to road biking will have difficulty with the narrower handle bars and the more aggressive positioning of the upper body. Another thing to be aware of is because the terrain is smoother, it’s much more critical to have the proper bike fit. Mountain biking is more forgiving since you are standing more and moving with the terrain. Also, it’s important to know that road biking can put more emphasis on an existing injury. If you need any additional information, we’d be happy to assist!