• 4-Speaker Ultra Boom! Audio Stage I Bagger Kit

    Part Number 76000671A





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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.

    • Designed specifically for Road Glide models equipped with a King Tour-Pak
    • Features a UV-stabilized, water and dust-resistant injection-molded polypropylene coned woofer built to withstand the elements while delivering rich sound (frequency response 75Hz-20kHz)
    • Highly efficient 2-ohm design (91.5db, 2.83V @ 1m) and plenty of power (75 watts/channel RMS)
    • Plug-n-play connectivity features new harnesses that fasten at all existing connections - speakers and amp fit effortlessly without cutting or splicing wires
    • Kit includes Boom! Audio 6.5" fairing speakers, Boom! Audio 4-channel fairing-mounted amplifier, amplifier mount and wiring harness
    • Dealer Digital Technician software update is required - Dealer installation is recommended
    • 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


    • Water Resistant

    • Dealer Install Recommended

    • 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


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    Fits '16-later FLTRU models. Also fits '15-later FLTRX and '15-'17 FLTRXS models equipped with King Tour-Pak® and rear speaker pods. Dealer Digital Technician software update is required. Dealer installation recommended. Separate purchase of Power Extension Harness P/N 69200921 is required if installed wih Hidden AM/FM/WB Antenna P/N 76000513.

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    More Info

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        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.


        Q & A

        Typically, how long it takes to install the Boom Audio Kit and the High Output Charging system in a Road Glide Ultra 2017?

        Hello, I know that the number of hours, a certified technician takes to install accesories on bikes, is standard world wide so, in order to make an estimate of my whole investment on this sound system, I would like to know how many hours would it take to install it in the dealership. I Will then know, depending on the cost per hour, how much would I have to spend in total. Is anything else I should consider in addition to the Boom audio Kit, the High Output Charger system and Labor? Thank you in advance
        Asked by: AlfredoRC69

        Watts output?

        The factory BOOM 6.5 system for 2016 has 75 Watts output, what is the output for the Stage I setup with the different speakers?
        Asked by: Ahhnuld
        Hi Ahhnuld, Our amps produce 300 watts. 1 amp powering four OE or Stage 1 speakers is 75 watts each speaker.
        Answered by: Rockstar883
        Date published: 2016-04-29
        • y_2018, m_2, d_26, h_20CST
        • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
        • cp_1, bvpage1
        • co_hasquestionsanswers, tq_2
        • loc_en_US, sid_PA-08-76000671, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
        • clientName_harleydavidson

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