Rugged, Compact & Powerful
Powerful, yet compact, audio amplifier kit designed for use on Harley Davidson motorcycles.
The HD4SPSYSTEM includes everything you need to take your 1998-2013 Harley Davidson sound system from stock to rock!
Compatible with 1998-2013 Ultra Classic, Electra Glide, Street Glide, Tri Glide, Road Glide, and Road Glide Ultra models. (Standard saddlebag lids only).