Rox Speed FX unique patented riser design allows you to pivot the riser in the original clamps and pivot the bar orientation in the top clamps of the riser Provides an incredible amount of bar positions for you to find the right height and pull-back for your riding position and stature Incredibly universal with their 2-piece design, clamped into virtually any 1 diameter clamps and then re-clamping the bar directly above that, on its original clamping area