If it's any help, I replaced mine (on C5) with "north road" style traditional bicycle handlebars, same tube diameter, cheap, interesting shape, no need to extend cables/electrics & they clear the tank for turning. I changed them purely for aesthetics, have yet to ride the bike with them fitted, they do feel comfy but a lot narrower than stock....so I don't know how they'll handle. Snow here in Eastern England at the moment so no chance of a test ride just yet .