Rox Speed FX Pro-Offset Block Riser - 1in.-1-1/4in. 3R-B12PO Rox new offset block Riser raises your bar straight up 1in. (vertical) or up 1in. and back 1in. when installed the other direction. Rox Pro-Offset risers have an oblong hole so that they will fit virtually any fore and aft bolt center to center distance with 8mm bolt threads acting as a fat-bar adaptor or they will work to raise your stock fatbars on BMWs (not 08-up Adventure), KTMs and more. Always check and confirm that your bike has adequate cable and brake line length before installing any handlebar risers. Mount Size: 1-1/8in. Handlebar Size: 1-1/8in.