That's what it says, but as far as I know they have not been test fitted on a 170. I sent Assiespeed a set of new Clifford 225 headers, and a used set of 170 headers. They were different. Mark "copied" these, and said one set would fit both. I hope they do, but someone needs to try. I am not about to spend that kind of money to find out they don't fit.