I bought this for a Carbon Fiber Road Race bike that of course doesn't have rack mounts on the frame so I needed a sturdy but adjustable rack since my mounting geometry isn't standard and CF frames are not the best for racks. I've been using this rack for several months on a bike they said can't have a rack and it has worked flawlessly with no signs of stress to the frame, and I use my bike a lot. This rack provides many ways to strap down what you are carrying securely and the tail light mount is reversible which came in handy for my Catseye USB slim tail light. You will need to buy some mounting hardware to install this rack if you don't have some already.