SinisterSound gives you the best audio sound system upgrade solution for your Harley Davidson motorcycle. The SinisterSound promise is not the empty hype you find from others in the sound design market. We have meticulously performed many years of research and development. We test our sound system designs in the environments they will be used; on motorcycles at typical road speeds with normal ambient noise. We do not just reconstitute car audio. Our fairing system alone is a major upgrade and will be heard, loud and clear, even at highway speeds. Your music will sound full, dynamic and crystal clear at high volume.