Fitment
Universal fit most harley motorbike with the front batwing fairing.
Also will work with stock and all aftermarket radios.
(Not fit 2005 and older stock radios Road Glides or 2014-UP)

Detail
The Rockford Fosgate PBR400X4D, pbr300x2, and pbr300x4 could mount directly to precut holes in the brackets.
Come with instructions.