Bar end mirrors help if your into those? Your right, the bars are hollow behind the cap.So my evol clip ons finally turned up the other week and are on the bike was really impressed at the quality of them. There are a couple of issues though with the stock body work. Even with them adjusted all the way back the brake and clutch lever make contact with the stock body work. Currently waiting on a Norton steering stop to see if that makes it better. Also they come with caps on the bars not bar ends so after about 20 mins of riding on the street my hands are numb. I haven't taken the caps of yet but I'm guessing there wouldn't be a thread inside for bar ends. I quite like the look of the r&g bar ends but not sure how I'll be able to make them work if the bars don't have a threaded hole. Any suggestions?