Fitted these to my Kona Sutra Ltd with Maxis Recon Race 20X2.2.5 tires.
There's not a lot of room between rear wheel and frame so was worried about the rear guard fitting and rubbing on the wheel. Fitted ok, but had to modify chain stay bracket with a file and the 5mm bolts supplied with kit are to big to mount rear guard through the frame so used 4mm ones instead. Thus far have only used on road with no issues, I am yet to try them on the gravel with bike loaded with bags. With nothing specific on the market for my bike these work with a bit of finessing if you inclined to go through the trouble.