BT4180 - 180 Watts RMS X 4

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.

Damn this thing rocks! Going down the highway (60-80 plus) the boom amp would have to be at 3/4 plus for volume with the AVC set at 2 bars. Couldn't go any higher without distortion. This Biketronics amp about makes your ears bleed at 1/2 volume! I had to turn the AVC down to 1 bar.
One of the things I was looking for was changing to a 4 channel amp and flashing the HK head unit so I could have fader control between the uppers and lowers on my SESG. This feature works awesome. I've always wanted to be able to bump the lowers a bit to even out the sound. The lowers seem to produce more base than the uppers. Must have to do with the enclosures and the opening sizes. I also put a few small strips of Fatmat behind each speaker. I'm using the same Biketronics (Hertz) Titan 6.5" uppers with 5 1/4 to 6.5 adapter ring, and lowers. Because of the quality and power of this system I was actually able to boost the base some and feel it working through my highway pegs!
In short, you guys and gals can do your own technical research, but from what I've read and heard out there nothing comes close to this new amp. Great job Biketronics.