1998 2013 Road Glide with Fairing. MB QUART ONYX 6.5 SPEAKERS +. Mb quart 6.5 inch car motorcycle atv speakers for harley davidson w adapter kit 1 silk dome tweeter design. Frequency Response 55-32,000 Hz. RMS 80 watts per pair / 40 watts each. 6-1/2 6-3/4 Speaker Adapter Plate. 1998 2013 Electra Glide with Fairing.