No, the two bolts on right and left do not connect to the seat stays. They attached to the frame just like any other standard caliper brakes. You can see a gap between seat stay and "middle arm" The two bolts there I believe to adjust brake/rim gap. Also there is no "quick release" that is why the brakes are in open position all the time. This is the reason why I don't like the braking and planing to replace them with Tektros (or whatever can be found at the good price)