Hertz Stage 6 Plug & Play Amp and Speaker Package With Air Cooled Lower Adapters For 2014-2023 Harley Davidson® Street Glide, Electra Glide, and Ultra that already has SoundStream Radio

Starting at $2,673.95

  • 6-Speaker Factory Replacement For Harley Davidson® Street Glide, Electra Glide, & Ultra
  • Prewired amp so all you have to do is connect power and ground to battery and connect remote wire. All other wiring is complete.
  • Your factory radio has to be flashed using the Technoresearch programming tool – which we offer for rent separately


Can you hear your factory Harley speakers loud and clear at highway speeds?

We didn’t think so…

Are you tired of blowing those factory speakers trying to be able to hear them?

Of course you are!

These issues are something we hear ALL the time at Volunteer Audio, so we are here to give you a sound experience you will be blown away with! This package will allow you to keep your factory radio when upgrading your sound system, but it will require a flash in order to get the full potential out of your amplifier and speakers so your music will be loud and clear up to 100 mph!

This Volunteer Audio Stage 6 amplifier and speaker package includes your choice of a perfectly paired prewired amplifier with 2 pairs of front speakers, 1 pair of rear speakers, air-cooled lower adapters and all required wiring needed to add to your bike without modifying any factory wiring in your bike.

This package includes:

  • Your choice of a prewired amplifier with gains and filters adjusted perfectly for your factory GT / GTS radio
  • 1 pair of Hertz SX165NEO 6.5” upper fairing speakers
  • 1 pair of Hertz SV165NEO 6.5″ tour pak speakers
  • 1 pair of Hertz SV165NEO 6.5” lower fairing speakers
  • Air Cooled Lower Fairing Adapters
  • Optional parts for this system include: upper fairing speaker grills, Sound Skins Sound deadening, and Battery

At Volunteer Audio we work hard so you don’t have to. We make it easy for you to add an amazing sound system to your bike by completing all the prep work here. When we send this kit to you it is as close to finished as we can possibly get it so you just have to install it. We will have all the gains and filters set on the amplifier so you do not have to know how to set the adjustments. All you will have to do is mount the amplifier with provided mounting hardware, run the provided wiring to under the seat and to battery and then install the speakers. We have step by step videos showing how to complete each step of this process and also offer lifetime tech support on items purchased from us.

This Stage 6 kit is next step to your dream audio system for your Harley. We also have Stage 4 and Stage 8 audio packages! Whether you would like to enjoy music while out riding through the country or compete in sound competitions we have the package that is just for you!

Vehicle Information

• 2014-2023 Harley-Davidson Electra Glide :
• 2014-2023 Harley-Davidson Street Glide :
• 2014-2023 Harley-Davidson Ultra :

Additional information

Weight 1 lbs
Dimensions 15.25 × 12.00 × 21.00 in