I just went from 11-28 to 12-32 and my 105 5700 SS works find. It's only rated for 28 but a member here said that he had had them work up to 32 and suggested I try mine. I'm glad I did because with a few turns of the adjustment screw it shifts from top to bottom with no issues. I don't know that the 11 speed will work but if you have th cassette I'd say it's worth a try. I didn't have to replace my chain, it was long enough to work big to big but I replaced it with a 1 link longer.