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4-Speaker Ultra Boom! Audio Stage I Bagger Kit

$1,049.95
5.00
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See 3 reviews
Part Number: 76000958
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Fill the air with sound from this Boom! Audio Boom Bagger Kit. The marine-grade, Class D, amplifier was designed to withstand the harsh on-the-road environment. When installed, the increased power of the amplifier provides the upgraded speakers a clean signal, and a custom equalization to optimize the performance of the 4-Speaker Ultra Boom! Audio speaker system.

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Showing 1-3 of 3
Reviews
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  • FEATURED REVIEW
    3/24/2025
    Well worth it
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Quality
    Did Not Meet
    Exceeded
    I bought my stage 1 kit second hand on Facebook Marketplace, installed it, and brought it to my closest dealer to have the radio flashed. I can tell you this much, it was well worth it. With the stock radio, it was hard to hear words to a song at 60 MPH. Now I can hear it loud and clear. Way way wayyy better! read more.
    Jesse - Niagara, WI
  • FEATURED REVIEW
    3/22/2020
    Blows the Stock System Away!
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    Had this kit installed in my last Ultra before taking delivery. Sound and volume were outstanding, and the system ran flawlessly for over 40,000 miles and thru all types of weather. Got a new Ultra last fall and didn't feel it was really necessary to upgrade the audio system right away. Wrong!! I ran the stock system up til the 5K service and just couldn't deal with the lack volume and less than average sound quality any longer. Had the dealer do the install and am so much happier. This system flat out rocks!! No more issues hearing tunes at interstate speeds, and the sound quality is just phenomenal. Love listening to it in the garage. I had forgotten exactly how great it sounds!! read more.
    DR1KL - Kansas City, MO - Motorcycle: Ultra Limited
    • Did you upgrade the High Output Charging System as well?
      Mike - Chicago Area
      1/7/2021
  • FEATURED REVIEW
    3/19/2020
    Great Sound
    Featured H-D Dealership H-D Employee Sweepstakes Entry Verified Purchaser Top 10 Contributor Top 25 Contributor Top 50 Contributor Top 100 Contributor Top 250 Contributor
    I had this put on my 2014 Ultra Limited FLHTK when I bought the bike new in 2013 and it has performed flawless ever since. I use volume 4 most of the time and I can hear this loud and clear.
    Tirpitz52 - Olney, IL. - Motorcycle: Ultra Limited FLHTK
Showing 1-3 of 3
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  • Question:
    6/19/2023
    The volume levels are not good... at highway speeds good luck hearing anything. I had the system installed at the dealership, flashed by the dealership can I improve this? My 2010 Electra Glide no with Boom Speakers were much louder than this setup.
    Ohiovalley - Ohio
    • Answer:
      Hello Ohiovalley, We recommend you work with your local Harley Davidson dealer with any installation problems/questions. Thanks blairmke
  • Question:
    2/21/2023
    What is the dealer labor cost to install this system?
    Cycle789 - Ofallon mo
    • Answer:
      Hello Cycle789, You would have to contact your local dealer or the dealer in which you'd like to have your bike serviced to get a quote. Thank you, RoseMKE
  • Question:
    5/18/2020
    how long does it take to install
    Bunkey56 - west babylon, ny
    • Answer:
      Hi Bunkey56, Installation time can vary greatly depending on skill level, experience, tool availability, etc. For most people installing a kit like this for the first time, it would be safe to assume that you'll be spending the majority of a day in the garage. Also, keep in mind that the radio and amp need to be reflashed once the installation is complete, which would have to be done by a dealership. TheBronzeFonz read more.
      TheBronzeFonz
      Helpful?

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