Tima ATAC last a long time, but they will wear out. The same thing happened to my first pair. I'm still using my second pair, though the left only works on one side now. I can't look at it now, because I left that bike at a friends house, but I dont think it's cracked on top, but the spring is broken. In that picture you can see the metal is worn away, much thinner when it broke compared to new. Pretty durable pedals though, which I guess is your point.