Are you talking about fuel line (gas tank to carb bank), or the little hoses between the carbs?
If it is the main fuel line, I recommend you get your dealer to order the Honda hose. I'm convinced it is a better quality line than some of the other stuff I've used. I don't recall the size just now, but the Honda parts guy can look it up for you and order it. I ordered extra and used it on other bikes, as well.