Originally Posted by
SloButWide
@
PatrickGSR94 beat me to it.
Came to recommend the Cygolite Hotshot Bracket.
and light.
It's great if you have a Hotshot and a reflector mount on your rack, and worthless otherwise :-).
PB sells a version of that for their superflash too. Although I have definitely converted from superflash to cygo hotshot over the last couple years.