reviewed by:
reburnsI used this to move my rack mounts out of the way so that I could convert our tandem's rear brakes from cantilever to V brakes without interfering with the rear rack. Nice, clean and stiff solution. Be aware that this does not mount on the seat post, rather it replaces the seat post clamp that goes over the bicycle frame's seat tube, so the diameter you want is the diameter of the frame seat tube, not the seat post diameter.