Boom! Audio Stage II Amplifier Kit - Fairing Mounted

Part Number 76000523




Crank up the volume and let your bike speak for itself. Boom!™ Audio Amplifiers with built-in fixed EQs are smart, powerful, and tough.

  • Marine-grade, Class D amplifier
  • Nominal output power: 75 Watts/channel into a 2-ohm load; 300-watts RMS total
  • Boom!™ Audio EQs directs a different signal to each pair of speakers based on the bike model, speaker location, and speed
  • Designed to withstand harsh on-the-road environment and were put through rigorous on and off-bike testing
  • An amplifier is required for each pair of Stage II Speakers added to your Boom!™ Audio-equipped Touring bike
  • Dealer Digital Technician software update is required - Dealer installation is recommended
  • Kit includes all mounting hardware and wiring harness
  • Stop by a participating dealer to interact with a unique audio display that lets you simulate how your bike will sound with Boom!™ Audio upgrades. Contact your local dealer for details

Fits '15-later FLTRU, FLTRX and FLTRXS models. Original Equipment on ’15-later CVO™ Road Glide® models. Dealer Digital Technician software update is required. Dealer installation is recommended. Separate purchase of Power Extension Harness P/N 69200921 is required if installed with Hidden AM/FM/WB Antenna P/N 76000513, Electra Glo™ Headlamp Trim Rings or Fairing Edge Lights.

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  • Model
  • Max Current Draw

    Peak at 50A
  • Frequency Response

    20Hz - 20kHz +/- 0.5dB
  • Operating Voltage

    9V - 16V
  • Number of Channels

  • Average Current Draw

  • Rated Power Output

    75W Per Channel, 300W Total
  • Water Resistant

  • Warranty

    1 year limited warranty – Go to for full details
  • Sold in Unit

  • In The Box

    Amplifier, all mounting hardware and wiring harness
  • Class

    Class D
Boom! Audio Amplifier Kit - Road Glide Fairing is rated 3.3 out of 5 by 4.
Rated 4 out of 5 by from Boom Audio System I installed this on my 15' FLTRXS and it is a big improvement over the stock system. I can now here the system at highway speeds.
Date published: 2016-06-27
Rated 3 out of 5 by from Up to you I have the full Stage II kit, front and in the back seat. Had a lot of issues from distortion, popping, not working, etc. Harley has corrected a lot of issues by updating the software. They still have a way to go. Do your research first on a sound system for your bike. Queen's Bohemian Rhapsody does sound great doing 80 down the highway.
Date published: 2016-03-21
Rated 1 out of 5 by from Junk do not buy this! I have the complete Boom Audio Stage 2 system with saddle bag speakers. And it is JUNK DO NOT BUY THIS. Does not sound or preform like the dealer says it will. And YOU CAN NOT HEAR IT AT HIGHWAY SPEEDS AT ALL. Stay away from any HD Audio stuff this is junk.
Date published: 2015-08-05
Rated 5 out of 5 by from Boom it! Added the fairing mounted Boom Amp kit today. Sound quality is way up. I like to ride at freeway speeds and actually hear what's playing. At speed with the volume up almost to maximum (I didn't need maximum volume at speed after the amp installation) the music was clear and crisp. Not as much bass as I thought I'd have but I think it's the speakers (see my review of the Harley Davidson high performance 6.5 fairing speakers) but happy with the investment. It's a little pricey and there are aftermarket alternatives that cost less but when considering that it's a Harley part made to work with Harley electronics and the bike being new and under warranty, I think it's worth the added cost. I hope my review was helpful. Ride safe!
Date published: 2015-05-06
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Is this Amp Kit compatible with Boom Audio Stage 1 Speakers?

Only Stage 2 speakers are listed under more information. Will this Amp kit also work with 2 ohm Stage 1 speakers? Thanks in advance for responding.
Asked by: Roadglider2016

What is the power rating at 2 ohms with only two speakers?

If the amp is 75 watts per channel at four channels, would it be 150 watts per channel with two channels?
Asked by: Retusn

Amp specifications

What are the amp specifications? Is this 75 watts/channel RMS? The waterproof 4-channel, 75 watts/channel amplifier (300 watt total) has been designed from the ground-up for the harsh motorcycle environment
Asked by: RoadGlideRider
Hey RoadGlideRider! This Boom! Audio Amplifier is 75 Watts/ Channel RMS. For additional specifications, see your local dealer.
Answered by: RowdyGrl79
Date published: 2016-02-09

Boom Amplifier Kit

Bike: 2015 Road Glide Special Can the Boom Audio Amplifier be configured to drive 2 channels @ 4 ohms?
Asked by: scooterroid
Hello Scooterroid, The Boom Amplifier can not drive 2 channels @ 4ohms. Thank you for your inquiry!
Answered by: JD34
Date published: 2015-01-14
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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.