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Hogtunes QC Ultra 4-RM Amp Speaker Kit - 2014 up Touring Ultra Models & Street Glide with Tour Pack.

  • $ 1,435.00 AUD

    or make 4 interest-­‐free payments of $ 358.75 AUD fortnightly with Afterpay More info

Includes QC 475-RM "Quadcast" 300 Watt 4 channel Amplifier with G4 front and rear speakers. Kit fits FLH (Batwing) and FLTR Road Glide model bikes. No radio "re-flash' is required (Road Glide Ultra owners please see Note 2 below). 

Cast aluminum 3D design gives exceptional thermal performance in high heat climates. Features proprietary R.E.M.I.T. circuitry which gives superb FM reception from a class D amp. Supplied "G4" front and rear speakers are direct replacements for stock speakers. Unlike car audio-based systems, the radios fader control will continue to work. Includes metal mesh grill for all 4 speakers. Includes 100% plug and play wire harness.

Very nice improvement over stock with minimal strain on the bikes charging system
All required hardware to complete the installation is in the box.

Amp can easily link to Hogtunes REV 225-RM to add lower speakers or saddlebag lids later on. 3 Year warranty on amplifier/20 Year warranty on speakers

Note 1: The QC 475-RM Amplifier is a Class D design. It should be understood that ALL Class D amplifiers, regardless of brand, cause a reduction in FM reception. The QC 475-RM features a proprietary circuit design called R.E.M.I.T. (Reduced Electro Magnetic Interference Technology) that Hogtunes believes gives the BEST FM reception available for any Class D Amplifier designed for a motorcycle.If you add a 2nd amplifier to your system, reduction of FM reception is increased and is considered normal.

Hogtunes understands that some riders prefer the cosmetics of in-fairing antennas, however, it should be noted that NOTHING works as well as the factory antenna. If FM is an important part of your riding experience, we strongly advise against the use of any in fairing type antenna!

Note 2: From a sonic point of view, Road Glide Ultra has the correct flash, however, the factory flash in Road Glide Ultra makes the radio play considerably QUIETER than it could. Less signal out from the radio means less signal going into the amps. If you install this system without a reflash,it will sound great, but will NOT reach its potential volume. A radio reflash by a Techno Research dealer is required to make this system play to its full volume potential. An OEM Dealer reflash will not “fix” this, as the OEM flash looks at the bikes VIN and will re-install the same “quiet” flash. To find a Techno Research dealer near you, please visit or CALL US!


  • 2014-Current FLHTK Limited Ultra Classic
  • 2014-Current FLHTCU Ultra Classic
  • 2020-Current FLTRK Limited Road Glide Ultra
  • 2016-Current FLTRU Road Glide Ultra
  • 2014-Current FLHTCUG Tri Glide Ultra
  • 2014-Current FLHX Street Glide
  • 2015-Current FLTR Road Glide
  • 2018-Current FLHT Electra Glide Standard Fairing (with factory radio installed)


  • QC 475-RM 4 Channel Amplifier
  • Front and Rear Replacement Speakers
  • Front and Rear Replacement Metal Mesh Grills
  • 1 Mounting Plate for FLH (Batwing) Model Bikes
  • Fasteners for FLTR Road Glide Model Bikes
  • Plug & Play Wire Harnesses For Front and Rear Speakers
  • All Required Hardware to Complete the Installation
  • 1 Installation Manual

Australian Shipping

Free shipping for orders over $200 in Australia.  We use a variety of services to get your order to you as quickly as possible.  

International Shipping

International shipping is available for all of our products and is automatically calculated in our shopping cart during checkout.  All international shipping is done with a tracking number so you can watch its progress to you. Please be aware that you may be charged Import Duty or Import Taxes from your Customs Office, HogLights is not responsible for any import duties or taxes payable. 

Our General Shipping Guidelines

In stock - next business day
Out of stock - approx 14 days
Special order - approx 21 days

For our shipping policy, please click here

For warranty claims and service requests, please contact Hogtunes directly by filling out the Warranty Form here. A Hogtunes Tech will respond within 2 business days. The Tech will determine if the product is valid for an immediate warranty replacement or if it needs to be sent in for further testing (service request). In all cases, proof of purchase is required.

Hogtunes Speakers are warranted for a period of 20 years from the original purchase date to the original owner.

Hogtunes and Wild Boar Audio branded Amplifiers are warranted for 3 years from the original purchase date to the original owner unless otherwise stated in the owner's manual.

  • All XL Series and Wild Boar Audio motorcycle speakers are warranted for 5 years.
  • The Metrix Audio MA4-BT Handlebar kit is warranted for 1 year.
  • The Metrix Audio UTV-1 Kit, Element X amp and Element 1 speakers are warranted for 2 years.
  • ​The Metrix Audio KVR-52 speakers are warranted for 20 years.

Hogtunes inc. products found to be defective during the warranty period will be repaired or replaced (with a product deemed to be equivalent) at Hogtunes Inc. sole discretion.

Warranty replacement
Once an RA number has been issued by a Hogtunes Tech, the purchase date of the product and if the customer has a valid receipt, will determine if the customer will receive an email with a prepaid UPS label, OR instructions on how to return the product to Hogtunes at the customer's expense. In either case, once Hogtunes sees the item "in transit" the replacement item will be shipped out. Failure to follow the return instructions may result in the return being refused/ rerouted back to the customer at the customer's expense.

Service requests
Once an RA number has been issued by a Hogtunes Tech and depending on the age of the product and if the customer has a valid receipt the customer will either receive an email with prepaid UPS label OR instructions on how to return the product to Hogtunes at the customers expense. Hogtunes assumes responsibility for costs associated with the return for valid service item/ replacements only. Failure to follow the return instructions may result in the return being refused / rerouted back to the customer at the customer's expense. Customers are also responsible for ensuring items sent in for service have been packaged appropriately so they are not damaged in transit. Product damaged in shipping will not be covered under warranty!

What Is Not Covered:
1) Any expense related to the removal or re-installation of Hogtunes products.
2) Repairs to these products performed by anyone other than Hogtunes.
3) Subsequent damage to any other components.
4) Any product purchased from a non-authorized Hogtunes/Drag Specialties dealer.
5) Damage to Hogtunes inc. products due to an accident or collision.
6) Hogtunes Amplifiers with broken or removed “warranty void” stickers
7) Damage due to water from any non-standard (custom) installation
8) Damage from incorrect installation, product removal, improper use, abuse, or modifications.
9) Damage to the inbound product due to unsatisfactory packaging.
10) Any expenses related to custom finishes or paint for any reason.