Its funny, two weeks ago I was thinking this probably won't happen to me (or at least hoping it wouldn't lol). This past Friday I was working on the bike and went to tighten my bolts holding my top handlebar clamp, and as I tightened them the top part of the clamp cracked. #@$&! So I ordered the least expensive replacement I could find on ebay, which turned out to be clamps off a 4 wheeler, and two piece, not one piece like the oem clamp. I got them today, and inspected the bottom part of the clamp to make sure it hadn't cracked. It hadn't, so on to replacing the top clamp. I took the broken clamp off and tried to fit the new ones up. They were a smidge too wide, but luckily they were shaped kind of triangular, so I went to home depot and got a metal file (they were aluminum so not too hard to file) and got to work. I filed them flat and straight enough to fit, and got some longer bolts to mount them with. They're on there now, nice and snug. Hopefully won't have to worry about it at all anymore.