Volunteer Audio

SX165NEO HMP4D 2-Speaker Factory Replacement w/ Amp For 14-21 Harley-Davidson


4-Speaker Factory Replacement For Harley-Davidson
  • For Select 2014-2021 Harley-Davidson Models
  • Frequency Range; 100-20k, Impedance; 4 Ohm, Sensitivity; 96.5dB
  • 1 Year Warranty
  • More Features!

Out of stock

SKU: HDPKG1032 Categories: ,


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 have partnered with Hertz 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 and capacity out of your amplifier and speakers so your music will be loud and clear up to 100 mph!

The Volunteer Audio Stage 2 Hertz amplifier and speaker system includes the Hertz
HMP4D amplifier and 1 set of Hertz 6.5” SX165NEO to mount into your front fairing
factory speaker locations. Roadglide or Shark nose fairing bikes require an amp
mounting plate that is included in this package. The amp comes mounted to the
amp plate and is wired and ready for the addition of the new speakers.This
combination is a perfect match for the environment of your Harley Davidson. The
HMP4D amplifier is a compact amplifier that is IP64 rated so you do not have to
worry about moisture, these Hertz speakers also have weather-resistant cones that
will stand up to any moisture that comes their way.

When we send out this Stage 2 package, the amplifier is pre-wired to plug into your
factory radio and keep your factory speaker wiring intact so it can be used with the
Hertz speakers we send. We have the amp gains already set to the maximum
setting for loudness WITHOUT distortion of the speakers. We do not want any
trouble with blown speakers you’ve had enough of that already, so our goal is to get
the most sound out of the speakers clearly. Once you plug into the factory radio the
power and ground wires that are attached to the amp will have to be ran to the
battery and connected, you will also install the fuse in the fuse block that is

This Stage 2 kit is next step to your dream audio system for your Harley. We also
have Stage 4, Stage 6, Stage 8 and even Stage 10 speaker 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!


If you do not have a Technoresearch dealer near you, we do offer a loaner tool
program so that you can flash the radio yourself.

Vehicle Information

• 2014-2021 Harley-Davidson Road Glide :

Additional information

Weight 9.6 lbs
Dimensions 15.25 × 8.00 × 3.75 in