Heres the only potential issue, If you look back to picture 1 of just the adapter you see the small groove for the mirror to mount to. These are wider than the Joker Machine adapter groove, with the idea obviously of mounting the Joker Machine bar ends. I mounted this mirror to it and tightened them down and they hold on solid so I'm not to concerned about it at this point. And if it falls off the pair was 12 dollars so I'll get the proper mirror from Joker Machine if that happens.