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

Part Number 76000671A




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 29900028
  • 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
  • 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 '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.

Bike not listed?
Select your year and model to see all the parts that fit your bike.

  • 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

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

Recently Viewed

    Please Hold Your Iron Horses

    Your Session has timed out

    You've been sitting idle, so we've ended your session to protect your personal details.

    Continue as guest Sign in


    You’ve been sitting idle, so your session will expire in

    Would you like to remain signed in and continue shopping?

    Yes, keep me signed in No, sign me out

    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.