These are replacements for my m1pro,.. the brackets broke on both the front and rear guards most likely from 1 of my 5 or so tumbles on the bike, I ride a lot more carefully now lol, so I expect these to last a lot longer, I will be getting another set for my brothers M1, and that will let me know if the brackets are just to weak or if it was my rough treatment of them as he rides less hard,.. so far they’re great the design is well suited to the overall bike though I think I would like a steel option but mounting points are limited with the M1 frame.