Harley Davidson Amplifier mount fits batwing bikes with aftermarket and stock radios for rockford PBR-300x2 & PBR-300x4 amps Fits all bikes with the batwing front fairing and will work with both stock Harman Kardon Radio and all aftermarket radios. (does NOT fit 2005 and older stock radios Road Glides or new 2014 + years) These brackets are made of strong light weight aluminum. The Rockford Fosgate PBR400X4D, pbr300x2, and pbr300x4 will mount directly to precut holes in the brackets. Comes with easy to follow full COLOR installation instructions. Will fit other model amps with a little modifications , wiring kits also avalible pt# B00L1PNX48