Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2017 Harley Davidson FLHR Road King

Change vehicle | Remove vehicle

A custom-fit vehicle-specific sub solution for your FLHR Road King saves space and offers a finish that is unrivaled.

Overview Upgrade your Stereo Upgrade your Speakers Add an Amplifier Digital Sound Processors Audio Installation & Accessories Independance Day Sale

Sub Boxes Custom-fit for your 2017 FLHR Road King for 2017 Harley Davidson FLHR Road King

A FLHR Road King custom-fit sub box is the best way to add bass without sacrificing space. You'll get a box that looks and sounds great and matches the factory "look" to a T.  We carry vehicle specific solutions like the NVX BOOST Boxes, JL Audio StealthBoxes, MTX Thunderforms and more.

Filters
filter-icon Filters & Sort

Kenwood eXcelon P-HD2R  

2-Speaker Rear Audio Upgrade Kit for select 2014-2023 vehicles from Harley Davidson Includes 6x9" Speakers and 2-Channel Amplifier

P-HD2R big
Go to item page Right Arrow Icon of Right Arrow

Kenwood eXcelon P-HD2R  

2-Speaker Rear Audio Upgrade Kit for select 2014-2023 vehicles from Harley Davidson Includes 6x9" Speakers and 2-Channel Amplifier

• System includes pair of 6x9" speakers and a 2-channel amplifier
• Designed to fit select 2014-2023 vehicles from Harley Davidson
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $119.90 in rewards to spend later

found car based on your search
Fits your FLHR Road King
List price $1500.00
-20% $1,199.00

In stock

Add to Cart

• System includes pair of 6x9" speakers and a 2-channel amplifier
• Designed to fit select 2014-2023 vehicles from Harley Davidson
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

Hertz HSP3

4-Speaker Audio System Upgrade Kit for select 2014-2018 vehicles from Harley Davidson Includes Two 6x9" Coaxial Speakers, Two 6.5" Coaxial Speakers and 4-Channel Amplifier

HSP3 big
Go to item page Right Arrow Icon of Right Arrow

Hertz HSP3

4-Speaker Audio System Upgrade Kit for select 2014-2018 vehicles from Harley Davidson Includes Two 6x9" Coaxial Speakers, Two 6.5" Coaxial Speakers and 4-Channel Amplifier

• System includes two 6x9" coaxial speakers, two 6.5" coaxial speakers, and a 4-channel amplifier
• Direct fit for a hassle-free installation, fits select 2014-2018 vehicles from Harley Davidson
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $235.00 in rewards to spend later

found car based on your search
Fits your FLHR Road King
List price $2655.00
-11% $2,349.99

Available

Ships in 10-14 days

Add to Cart

• System includes two 6x9" coaxial speakers, two 6.5" coaxial speakers, and a 4-channel amplifier
• Direct fit for a hassle-free installation, fits select 2014-2018 vehicles from Harley Davidson
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

Diamond Audio DA1423SGSP3

4-Speaker Audio Upgrade Kit for select 2014-2023 FLHR Road King and FLHX Street Glide and FLTR Road Glide Includes Pair of 6.5” and Pair of 6x9" 2-Way Coaxial Speakers and 4-Channel Amplifier

DA1423SGSP3 big
Go to item page Right Arrow Icon of Right Arrow

Diamond Audio DA1423SGSP3

4-Speaker Audio Upgrade Kit for select 2014-2023 FLHR Road King and FLHX Street Glide and FLTR Road Glide Includes Pair of 6.5” and Pair of 6x9" 2-Way Coaxial Speakers and 4-Channel Amplifier

• Includes pair of 6.5" and pair of 6x9" coaxial speakers and 4-channel amplifier
• Fits perfectly into the 2014-2023 Harley-Davidson Street Glide
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $193.00 in rewards to spend later

found car based on your search
Fits your FLHR Road King
List price $2315.99
-17% $1,929.99

In stock.

Add to Cart

• Includes pair of 6.5" and pair of 6x9" coaxial speakers and 4-channel amplifier
• Fits perfectly into the 2014-2023 Harley-Davidson Street Glide
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

 
    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Custom-fit Subwoofer Boxes & Enclosures in 2017 FLHR Road King

    Q: Can I upgrade or change the Custom-fit Subwoofer Boxes & Enclosures in 2017 Harley Davidson FLHR Road King?

    A: Yes this page includes all the best Custom-fit Subwoofer Boxes & Enclosures that work in your FLHR Road King.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    1986 Mazda 323

    2012 Audi A3

    2022 BMW X6

    1996 GMC S15 Sonoma

    1994 Geo Tracker

    2010 Toyota Sequoia

    Vehicle
    Store     Delete

    2017 Harley Davidson FLHR Road King

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2017 FLHR Road King
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.
    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo