Had to buy these due to acerbis using plastic bar mounts when you buy their hand guards. The plastic ones broke during a woods race resulting in a DNF for me. These are aluminum and stronger and will hopefully hold up a lot longer.
I bought this kit for my wife's bike because the first one rattled loose and I was missing some parts. Things rattle loose on dirtbikes and that is my fault for not monitoring it better but I wish the parts were sold separately instead of making you buy the whole "kit." That's more of an acerbis issue than a motosport issue. Motosport processed and delivered quickly as always!
I've been usung these mounts for a year or so now. The only problems I've are, once during a race one of the bar end bolts came out, and once when ordering a new set it was missing the bar insert cone pieces. I continue to use these because they're pretty stout, and work well. Even though I use UFO guards now that they sponsor me.