My muffler detached from the mid-pipe this morning before work. The exhaust clamp has seen better days so I want to replace it. Being the smart guy that I am, I forgot to bring it with me on my bike ride to work. Does anyone know what the proper clamp size is? 2" or 2.5"? It's # 19 in the attached diagram, though REALOEM doesn't give a part number. I'd like to swing by napa on the way home to pick it up.