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Rockford-Diamond Speaker & Amplifier Combo Upgrade 2014+ Harley Street Glide C-14SGRFDA-SYS1


Complete Plug-and-Play Rockford-Diamond Harley Street Glide Combo Upgrade

This kit comes loaded with all of the top-level components you need to upgrade your 2014-Present Street Glide, and the best part it's all plug-and-play with your factory Harley radio. There's no need to search for all the best components, wire harnesses, and installation hardware; it's all included here!

Extreme Output & the Best Sound Quality

Step into the top level of pro audio Street Glide speakers. This kit includes everything you will need to add Diamond Audio M075T horns and MSPRO65 mid-woofers to your 2014-Present Road Glide. This is a whole new level of loudness that has not been possible until now.

Easy Installation

We include several parts in this kit that make installation a snap. Included are quick disconnect harnesses for each of the horns and crossovers. The included speaker grills bolt into the place of the original factory grills. Each horn comes with a CNC machined HDPE backplate. All fasteners are stainless steel. The woofers are plug-and-play with the factory Harley speaker wiring.

IP65 Marine Grade Speakers

These speakers are factory treated to take all of the weather you can throw at them, including extreme UV exposure, extreme swings in temperature, high vibration, and water.

Competition-Level Parts All-Around

You won't find any performance bottlenecks in this entire kit. All included parts are the latest and greatest. The Rockford Fosgate amplifier is the perfect fit under the radio, and the Diamond Audio speakers come with custom grill-mounted horns. Every component comes with the best possible connection and wire harness solution possible.


The Magic Compression Horns

The Diamond Audio M075T is a dual-stage horn design with a much smoother sound than usual. The entire format diaphragm is large and robust, which allows for extreme level output volumes. The magnet is in front of the diaphragm, allowing for a much more compact horn design, easily fitting in front of the midrange.

Bold Pro Audio Mid Woofers

The Diamond Audio MSPRO65 6.5" woofers are a significant improvement above all other pro audio type mid-woofers on the market. These woofers have a better bottom-end response. Other popular pro audio woofers sound notoriously thin on the bottom end. Diamond Audio uses a convex cone geometry that increases cone rigidity under load while keeping the moving mass down. This makes the speaker louder and better sounding.

Installation Note: The factory speaker pods in the fairing require a light modification for magnet clearance. Heat the plastic speaker pod with a heat gun around the area where the magnet touches and screw the speaker in place. The plastic will then conform to shape, allowing the speaker to fit perfectly. The improved bottom end response of these woofers is superior to other 6.5" woofers on the market but should not be confused with the bass response of larger woofers like subwoofers or 6x9 lid speakers. 

Steel Speaker Grills with Horns Mounted

We stamp and mount the MO75T horns for you. Black coated stainless steel fasteners are included, and a CNC machined HDPE backplate so that the speaker grills match the rest of the bike's integrity.

12db Crossovers Add a Lot to Performance and Reliability

Most of the horns on the market come with 6db caps for crossovers. Those types of crossovers have a lot of problems, though. The sound of a horn using just a cap changes dramatically with volume, making it impossible to tune your system to sound equally as good at high volume as lower volumes. The crossovers included in this kit are 12db crossovers with a much higher power handling and a much more stable output at all volume levels.

RF t400x4ad

Rockford Fosgate T400X4AD 400-Watt 4-Channel Amplifier

The T400X4AD is a powerhouse of an amplifier and one of our favorite amplifiers to use in the fairing. With twin fans, this amp stays cool even in extreme weather. This amplifier is engineered for high vibration, high humidity, and heat, thriving where others fail. We also have amp racks that we make that are specific to this amplifier if you want to mount it in a saddlebag. Perfect for use with factory radios or aftermarkets. This amplifier works excellent with our 2014+ plug & play signal harnesses.

Installation Note: This amplifier fits perfectly under the radio and above the headlight using the included amplifier mounting pad. The front two plastic tabs on the headlight may need trimming for clearance. These two tabs are there to hold the factory wire harness in place and are not structural in any way. 

Premium 8 Gauge Power Harness

The included power harness is 100% OFC (oxygen-free copper). The ANL fuse holder is waterproof and install-friendly. The power cables have been pre-terminated, heat shrunk, and loomed for you. This makes for a beautiful installation every time.

Harley Davidson Fairing Speaker Pod Connectors

Plug and Play Speaker Pod Connectors with Extensions

Don't cut any of your wires! We include plug and play connectors for the factory speaker pods in the fairing. This makes the installation easy. Plug into the pods and connect the speaker wire extensions into your new amplifier; it's that simple.

Harley Speaker Gasket

Neoprene Speaker Gasket

It wouldn't make any sense to install the best speakers without properly sealing them into the speaker pods. So we include a unique but straightforward gasket that we have manufactured just for speakers in Harley applications. The adhesive and the neoprene rubber maintain integrity for years in extreme temperatures.


  • Fits 2014 - Present Harley Street Glide

What's In The Box?:

  • Rockford Fosgate T400X4AD 400-Watt 4-Channel Amplifier
  • 6.5" Diamond Audio MSPRO65 pro audio woofers
  • Dual-stage Diamond Audio M075T compression horn tweeters 
  • Stamped steel, powder-coated Street Glide speaker grills with horn provisions
  • Eight-gauge OFC amplifier power kit for Harley Davidsons
  • 2014+ Harley factory radio signal interface harness
  • 2014+ Harley factory speaker pod interface connectors with extensions
  • Stainless steel mounting hardware for horns
  • Neoprene speaker gasket
  • CNC machined HDPE horn mounting rings 
  • Pre-wired OFC tweeter extensions with serviceable quick disconnects

Specifications - Diamond Audio Woofers:

  • Model: MSPRO65
  • Power Rating: 200 W RMS/ 400 MAX
  • Sensitivity: 97dB 1W/1M
  • Frequency Response: 110Hz-10k Hz+/-3dB
  • Nominal Impedance: 4 ohm
  • Mounting Depth: 2.375"
  • Cut-out Diameter: 5.625"
  • Overall Diameter: 6.5"
  • Overall Height: 2.5625"

Specifications - Diamond Audio Compression Horn Tweeters:

  • Model: M075T
  • Overall Diameter: 2.28"
  • Cut-Out Diameter: 1.61"
  • Over-All Depth: 2.0"
  • Mounting Depth: 1.12"
  • Sensitivity: 106 dB 1W/1M
  • Frequency Response: 2k - 20k
  • Nominal Impedance: 4 Ohm
  • Power Handling: 50W RMS / 100W Max
  • Included Crossover: 12db

Specifications - Rockford Fosgate Amplifier:

  • Model: T400X4AD
  • Rated Power (RMS Continuous):
  • 100 Watts x 4 @ 4-Ohm; 100 Watts x 4 @ 2-Ohm; 200 Watts x 2 @ 4-Ohm Bridged
  • Dynamic Power:
  • 128 Watts x 4 @ 4-Ohm; 152 Watts x 4 @ 2-Ohm; 290 Watts x 2 @ 4-Ohm Bridged
  • Frequency Response: 20Hz-20kHz
  • Total Harmonic Distortion: 4-Ohm, <1.0%; 2-Ohm, <1.0%
  • Power Input Connector: Detachable Compression Terminal
  • Rockford Fosgate proprietary Class AD technology
  • 4/2 Ohm muti-impedance Constant Power
  • Differential inputs with high-level auto turn-on feature
  • 8 AWG power/ground connector w/ upgraded RCA connectors
  • Remote-Out feature when using high-level inputs
  • 2/4 channel input switch
  • 4 Ohm bridged capable
  • C.L.E.A.N. input/output clip detection and indicator LEDs
  • Top-mounted controls
  • Cooling: Dual Fan Cooled
  • Real-time thermal sensing
  • Heatsink: Extruded Aluminum
  • Discrete surface mount technology
  • Dimensions (H x W x D): 1.6” x 4.3” x 8.3”


Usually ships in 2 to 3 business days. We process and build orders in the order in which they are received. This allows our experts to review every order and check that it is correct for your specific bike. So sometimes you might wait a little longer to receive your order, but it's always worth it!



    Shipping This Item Ships to The United States 

    Items built to order have a build time of up to two weeks before shipping. Items that are not built to order (e.g. amplifiers, speakers, .etc) typically ship in 2 - 3 business days. Many of our speaker kits feature machined special parts and customized wire harnesses that are built to order. We process and build orders in the order that we receive them. This allows our experts to go over every order and check that your particular order is correct for your particular bike. This means sometimes you have to wait a little longer to get your order but it's always worth it! 

    Once You Order Does Ship

    You will receive an automated email with tracking information as soon as our shipping department creates a shipping label for your package.  


    There are many more speakers, amplifiers, and kits to choose from than what you see here.

    [powr-form-builder id=1f43a15c_1475460501]

    Please allow 10 business days for your order to arrive if it is an item that is built to order. Items that are not built to order (e.g. amplifiers, speakers, .etc) typically ship the next business day.We process and build orders in the order that we receive them. This allows our experts to go over every order and check that your particular order is correct for your particular bike. This means sometimes you have to wait a little longer to get your order but it's always worth it! 

    Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap! You can find our refund policy here.

    Here are 5 great reasons to buy from us:



    Easy Returns

    Returns are easy, simply contact us for a return Authorization number and send your item to our returns center for fast processing. We'll get you a replacement or refund in a snap! You can find our refund policy here.



    Your part is guaranteed to fit. We test fit every part we sell on actual bikes in order to verify fitment on each model, generation, and in each possible location. You can be sure that if we have stated that a part fits your bike, that it will, or your money back. You will find model, year, and location fitment details on most product pages.

    Secure Ordering


    Ordering from American Hard Bag is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either.



    We Thoroughly Test Every Part We Sell on a Real Bike. There are a lot of parts out there that we refuse to sell. If it’s not up to our high standards, it never makes it to this website. We have parts that fit various budgets and levels of insanity, but all parts we carry are exceptional performers.



    Because We Are Fully Authorized Retailers for All Brands We Sell, Manufacturers Warranties Are 100% Valid. There are only a select few authorized online retailers for the brands that we sell. Most all online retailers (even the really big ones) are not authorized at all! And the manufacturer's warranty is void before you even get your items.

    Join the Club to Get  $100 Off Your Order!

    Register as a member and get $100 off qualifying orders of $1,500 or more that are financed through SNAP(our kickass finance company). $100 comes right off the total of your order. Orders under $1,500 still qualify for 100 days same as cash with no credit needed. 


    Members Only

    Join the club. American Hard Bag Membership

    Important Note: In order to take advantage of our $100 member discount on financed orders you must register a user account. Members with a user account also enjoy member only benefits such as free shipping and free product upgrades. See details on your account page.

    Finance Up to $3,000 Today and Shop Right Away

    American Hard Bag has teamed up with Snap Financing to offer our customers a 100 day same as cash financing option. We have found this to be a great program. We advise you to pay off your purchase within 100 days to take advantage of $0 in fees. We cover the financing fee as long as you pay your purchase off within the 100 days. After that point fees will apply.  

    American Hard Bag Financing

    No Interest & You Pick Your Payments

    We pay your initial SNAP processing charge for you. There is an initial charge that SNAP has for running the application, but we cover that charge entirely for you when you make your purchase. SNAP gives our customers 100 days to pay and not incur any fees or interest. So your entire purchase is "Same As Cash". No hidden fees.

    No Credit Needed & No Hard Credit Inquiry

    Snap has an 80% approval rate. It's simple. If you have had a job for 90 days or more, have a checking account in good standing, and make more than $1,200 a month you should qualify. You never have to worry about your credit score being affected by applying. So there is nothing to lose except a great opportunity. 

    Up to $3,000


    Apply Now

    Bad Credit, No Credit, OK!

    Snap Finance provides easy financing for people with good or bad credit just the same. Even if you have no credit, Snap is a great way to finance the things you need. It’s not a traditional loan, but a consumer lease that spreads out your purchase over 100 days.

    We don’t pull credit from the main credit bureaus (CRAs)- because that actually can hurt your credit! And our finance experts are here to help. What does that mean to you? Even with a low credit score, you have a great chance of being approved with Snap! Don’t let no or bad credit stand in your way anymore.

    High Credit Limits

    Not only do we offer high approval rates, we offer high approval amounts as well. So if you have a job and good banking history, apply today to see how much you qualify to receive. Once approved we’ll set up easy automatic payments which makes owning the new audio system for your Harley or upgrading your existing system a breeze. Don’t let your credit history stand in the way. 

    All you need to begin a new application is:

    • Be at least 18 years old
    • Have a steady job with reliable income
    • Have an active checking account

    $450 is the minimum amount that can be financed. 


    Apply Now


    Got Questions? 

    Call American Hard Bag and we can help to see if Snap Finance is right for you! 1(888) 311-0016