I have used these amps and they were loud and clear at interstate speeds with ear plugs in
http://www.uniqcycle.com/Motorcycle_Amplifiers_s/24.htm By: Guest on: 5-2-2009
Make sure you change you speakers too. The little made in china speakers that come from the factory are junk. By: Guest on: 5-2-2009
Try Hawg-wired.com By: Guest on: 5-6-2009
try www.fullwaveaudio.com By: Guest on: 5-21-2009
I cant hear my radio over my toaster oven and coffee pot brewing...LOL CHOPPERS RULE!!!! By: Guest on: 2-28-2010