I think that plastic becomes brittle. I have had a few bends in it, due to hitting truck rails. Our last trip out, last week, I had both sides break off large pieces. I will not repair or replace until time to sell, then I may think about it. Probably not replace it, but that is really the only thing not in excellent condition. The Cyclone is 3 years old and doing well, so I can handle a minor blemish in that cover.