BT4180 - 180 Watts RMS X 4

just finished installing which was a snap, with 4 speakers. 2 of the hertz and 2 of the 7.1 in faIring lowers. 75% of the previous wiring is now gone and the sound is beyond awesome.

GET YOU EAR PLUGS READY!!! This amp is so powerful and crystal clear, Its unbelievable. I installed it in my 2012 Harley Roadglide with a Jensen HD1BT HU and Biketronics 7.1 Titan II speakers. In my bags im running (4) 6x9's. I could only turn it up half-way in my garage and the walls were shaking. BUY IT!!

I received this amp as a birthday gift from my wife. My son and I installed it this past weekend and WOW!!! This amp is superb!! It’s definitely high power and if your not careful, you can hurt your ears. My music is so clear and loud on my bike now. It made my 6x9 speakers shake the garage and it was only turned up half way! BUY THIS AMP, just do it! You won’t regret it!

Best amp for Hd

You can just feel the quality in this amp right out of the box. It was easy to install in my motorcycle and it out performs all the other amps I've tried.

I started with the retro fit and 6.5 Titan II on my 2012 SG. It sounded a lot better than stock. A few months later I added the 4180 and mounted the pod speakers to the king tour pack and wow what a difference. The clarity is unbelievable!! You can crank the hell out of the volume to the point of it being unbearable before you get any kind of distortion. The entire system is perfect and easy to install.

I recently installed the BT4180 amp and the BT7P1 speakers. They were easy to install and sound is unbelievable! The guys at Iron Cross installed front & rear outputs on the back of my head unit which also helped. Not only do I hear the music at 70mph I also hear every note, and the clarity blew me away. I went on a poker run and was taken requests from the guys riding behind me. The only down side was that it’s a tight fit under the fairing on my Ultra Classic. I had to relocate my iPod module and CB module to the underside of the radio. Just one last thing, the guys at Biketronics were very helpfully, and the stuff is made right here in the U.S.A. a big plus.

This amp is so powerful it gave me a headache after about 30 minutes riding with it less than half-way. Matter of fact, I stopped at red light next to someone in vehicle talking on the cellphone. The music was so loud that they put their windows up but it didn't help. They then proceeded to put their vehicle in reverse nearly backing into the vehicle behind them. All in an failed attempt to escape "the music coming from a bike". Another thing, the music is crisp and clean even at higher volumes. Awesome Amp!

Just thought i would let others know about the BT4180 and how great and a easy install it was. I have tried other amps and as usual something was missing in all levels of the sound performance. I won't say what other amps i have tried, but with the BT4180 i cant believe there is a better amp for the money. The wiring install was so easy and no knobs to have to ajust for the gains made it a breeze to hook up.Now my speakers (Biketronics) perform better than before.I would HIGHLY recommend it for price and quality.