Rizoma universal conical (variable section) handlebars 22-29mm. Click the resources tab to download a pdf file with measurements and other information for this handlebar. If your original handlebars are not variable section you will need new Rizoma riser/adapters to use these handlebars. This bar is 22mm where the controls mount and 29mm where it clamps to the top triple clamp.
Please note that Rizoma handlebars are not pre-drilled for your OEM controls. You will have to either drill the bar or remove the mounting pins on the controls. A very easy task.