Not for MTBs or Hybrids
I posted a previous review that somehow got deleted. This is a well manufactured product; however, it is not compatible with most US Spec bike stems. I have 4 bikes and it the adapter did not fit any of them. Thule needs to update or design a more versatile adapter to make it compatible with most bikes, not just the classic types with tiny thin, tall stems.
Tom the Bike Lover