Havoc GP-1 HD Dyna/Sportster Gauge Stereo Head UnitHavoc GP 1 HD Dyna Sportster Gauge Stereo Head Unit If you want a clean, compact head unit without hanging a big stereo off your bars, this is the answer. The Havoc GP 1 Dyna Sportster Gauge Stereo Head Unit pairs the Aquatic AV GP 1 gauge stereo with a Havoc Motorcycles billet pod and a billet handlebar clamp so the system mounts solidly and looks like it belongs on the bikenot like an add on. The GP 1 gives you modern playback options in a small,