Had to file off a bit right where the hanger mounts to the frame as that spot was slightly thicker and longer then the original one that got replaced. This might just be because of my particular frame geometry that it didn't fit right, but if this is supposed to be machined identical to my stock one, it wasn't. Unless there's a good engineering reason, I never understood why this hanger and some others are so lightweight and made with aluminum instead of something stronger, they fracture easily with all the stresses on them. It took me a little extra work and wasn't as easy as just bolting on, but I got it working and am happy to be riding, hopefully its not the next part to break...