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Boom! Audio Stage I Bagger Amp & Speaker Kit - 4-Speaker

Part Number 76000411A




Fill the air with sound from this Boom!™ Audio Boom Bagger Kit. This complete audio kit provides the latest in Harley-Davidson® audio components. When installed, the increased power of the amplifier provides the speakers with a clean signal, and a custom equalization is available to further optimize the performance of the Boom!™ Audio speaker system.

  • 4-Speaker Ultra Boom!™ Bagger Kit
  • Ensure maximum output of your audio system with the recommended High Output Charging System P/N 29900028A
  • Dealer Digital Technician software update is required
  • Dealer installation is recommended
  • Kit includes Boom!™ Audio 6.5" fairing speakers, Boom!™ Audio 4-channel fairing-mounted amplifier, amplifier mount and wiring harness
  • Speakers feature two-year warranty
  • 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 '14-later FLHTCU, FLHTCUL, FLHTK, FLHTKL and FLHTCUTG models. Also fits '14-later Street Glide® models equipped with King Tour-Pak® luggage and rear speaker pods. Dealer Digital Technician software update is required. Dealer installation is recommended. Separate purchase of Fairing 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


Use of a Boom!™ Audio Amplifier turns off the radio's internal amplifier. Installation of a third or fourth set of speakers requires the Boom!™ Audio Speaker Expansion Kit

  • Water Resistant

  • Warranty

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

  • In The Box

    Boom! Audio 6.5” fairing and rear speakers, Boom! Audio 4-channel fairing-mounted amplifier, amplifier mount, and wiring harness
  • Configuration

    2-way full range
  • Audio Size

    Woofer - 6.5", Tweeter - 1"
  • Impedance

  • Crossover

    2nd Order High-Pass Filter @ 3000Hz
  • Sensitivity

    91.5dB +/- 2dB
  • Class

    Class D
Boom! Audio Bagger Amp & Speaker Kit is rated 4.2 out of 5 by 6.
Rated 4 out of 5 by from Great sound however 2 speakers failed Great sound upgrade for being hearing impaired. However 2 speakers have failed to date one front one rear.. both the center speaker just fell out.
Date published: 2017-05-13
Rated 5 out of 5 by from What a difference. Just got my 2014 Ultra Limited out of storage at the dealership and had this upgrade added. Right from the beginning I knew the money I spent was well worth it. Although it is somewhat louder than stock, I can truly say the clarity and punch is a huge upgrade. The bass hits you squarely in the chest with excellent high end sound also. I can take the volume all the way up and the system has no distortion. I had kids in the car next to me playing along with a drum solo that was on the radio and they gave me a thumbs up. I would definitely recommend this product.
Date published: 2016-03-18
Rated 5 out of 5 by from Harley sure has worked on this problem I ended up with Boom Audio speakers on my old bike and was finally happy with the way music sounded at speed - loud enough and clear enough. I didn't hesitate when I outfitted my 2015 FLHTCU, and am I glad. This thing add's ton's to the stock 6.5 infotainment system. And the Bass blows you away when standing still on my 2015 the new enclosures around the speakers in front make a huge difference. Clear, Loud, balanced - good work Harley-Davidson - and easy to integrate as well. Beats the heck out of aftermarket solutions.
Date published: 2015-05-04
Rated 1 out of 5 by from $1,000, Speakers keep blowing On my Ultra Limited, I had the dealer install the full system. I wanted a little more sound for the hiways. I spent about $850. in parts, dealer discounted it, and about 200 to install. Less than a half a mile away, the first speaker blew out. Went back, he had to order another. Waiting a month, the second blew. I called the dealer to let him know, he added that to my order. The system did sound nice when it was first installed, alot clearer and a little louder, not much, but noticeable. Well before he got them two speakers in, I traded the bike in, and got a TriGlide. I lost all that money, without any pleasure. I would love to upgrade the TriGlide, but not at that cost, and BAD SPEAKERS.
Date published: 2014-10-30
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Boom! Audio Stage I Bagger Amp & Speaker Kit - 4-Speaker P/N: 76000411A

Where can the PDF installation instructions for the Boom! Audio Stage I Bagger Amp & Speaker Kit - 4-Speaker P/N: 76000411A be downloaded from. I need them to decide whether I can install this product or not.
Asked by: WLibert

Auto volume control

I have a 2015 tri-Glide and when I purchase the bike I had the BOOM! AUDIO BAGGER AMP & SPEAKER KIT installed before i pick it up from the dealer and now the auto volume control will not work on the bike also when it does come on then I cant change the volume from the handle bars. Is this normal when you have the BOOM! AUDIO BAGGER AMP & SPEAKER KIT added??? If so what can I do to get this to work? $1000.00 is a lot to pay for something that does not work!!
Asked by: rkelly17

Will upgrade play without having the new software flashed

Asked by: Jimmy69
Hello Jimmy69, You do need to have the download installed to activate all of the components. Thank You!
Answered by: JD34
Date published: 2015-04-16

Amp in kit

will this amp in this kit power the front stage II speakers that HD just came out with?
Asked by: oneup
Hi Oneup, Unfortunately, no, the Boom Audio Stage I Amp in this kit will not power the Stage II Speakers. If you were going to install Stage II Fairing Speakers, you would need the Stage II Fairing Amp kit, P/N76000278, Thank you for your question.
Answered by: FXS78
Date published: 2015-03-09

slightly confused on the Charging system upgrade requirement

you stated: "The 54-Amp High Output Charging System P/N 29900028 is a recommended install anytime a multi-amp audio system is installed in order to achieve the full capability of your audio system." If I'm understanding this right, if I use only one Boom amp and 4 speakers, then the charging system upgrade is not a requirement on a 2014 FLHTK? If I run more than one amp, then the charging system needs upgrading from the stock 50amps to 54 amps. is this correct? thanks brian
Asked by: Candubrain
Hello Candubrain, You are correct! You do not need the upgraded charging system to install PN 76000411. Thank you!
Answered by: JD34
Date published: 2015-01-30
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  • loc_en_US, sid_PA-08-76000411, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
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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.