The BHD3F is the first of its kind to fit 1998 to present Harley Davidson Road Glide and Street Glide models all in one package. This simple to install Plug-n-Play solution is all inclusive package that features a compact high power four-channel Class D amplifier, a pair of 6.5” 2-way weatherproof speakers as well as all of the mounts, hardware and connections to make the installation seamless.