4-Speaker Ultra Boom! Audio Stage I Bagger Kit

Part Number 76000671A




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

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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  • 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

  • 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

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
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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.