Mikuni Carb Top Cover For Mikuni HSR When thinking of anything carb related, one name that comes to mind for many is Mikuni. They offer replacement carb tops to meet and succeed your needs. This carb top is intended to be used in conjunction with Hsr42/45 carbs. Features Brightens up the top of your Mikuni HSR series carbs with chrome Smooth top cover includes chrome mounting hardware along with a fresh gasket Compatible with all HSR