These are 50mm Butt welded clip ons very similar position to the oem bars only wider and much stronger with the option of setting the pullback to your own preferrence as they do not bolt into the top triple clamp. They have a M6 boss weled in the top of the r/h bar to mount the brake Reservoir off . The ends are open but can be supplied with M6 bosses welded in the ends for the OEM end weights for and extra $20 if requested, otherwise for racing we recommend using our 40gm ali anodised end plugs avaliable seperatley.