Those are in-line cross levers that should be mounted next to the stem on the 26.0mm clamping area of the bar, in which case the Tektro RL726 lever is recommended >>> http://www.jensonusa.com/store/produ...oss+Lever.aspx If they are mounted on the 24.0mm bar area, they will interfere with placing your hands on the tops. You can also buy a 26.0 to 31.8 shim to do this with the RL570 lever.