the mount fit my road bike bars perfectly. My MTB bars a a thinner diameter so we needed to put something on the bars to widen them so the mount would fit. Once on, the mount is great and and the Garmin is in a much better position than when on the stems. Just make sure the diameter or your bars matches the mount or you will have to do something to modify the bars. I took one star away because there is no adjust-ability for different diameter bars.