rockford fosgate hd14u-stage2 four speakers & amplifier kit for 2014+ harley-davidson road glide ultra & street glide ultra rockford fosgate add a high-performance 4-speaker, 400-watt audio system to your motorcycle, purpose built for select 2014+ harley-davidson road glide ultra and street glide ultra models. system includes a two 6.5? speakers for the fairing, two 6.5? speakers for the tourpak, a 400 watt 4-channel amplifier, and complete installation kit. you will need to flash your factory radio to use this kit.