I have order all the part's I need to install motorcycle turn signal for my Surly Big Dummy The BD is a lot wider than most bicycle and the cost is not that bad to have super bright turn signals on it.I think it's a good idea but each his/her own.It will be a while before I will get to install them but I can't wait to give it a try anyway.Here is a look at the rear of my BD.The bicycle is a long way from being done I have a lot of work still to do to it.