Its holding up great. No heel strike, never had to readjust. Have had about 20 lbs on it so far. Its rated at 55. Solid. Only one little thing, My panniers have U hooks at bottom and a normal rack you just hook it where too tubes come together in V. Here you can't do it but there is a hole in bottom of tube so you can put the U hook in there. Only thing is sometimes it take a couple seconds to take it out. You can't just grab the pannier and go. Sometimes you have to fiddle with the U hook. Very small annoyance though.