Contact us
Close contact box
Connect ID #
135 036 947 4
Connect ID #
135 036 947 4
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

Rockford Fosgate HD14-STG2 Stage 2 audio kit for select 2014-up Harley-Davidson motorcycles — includes 6-1/2" fairing speakers and a 4-channel amp

Item # 575HD14ST2

Ready to upgrade the sound on your 2014-up Harley-Davidson®? Go big with Rockford Fosgate's HD14 Stage 2 kit.

Find what Fits your vehicle


Checking fit...

Ready to upgrade the sound on your 2014-up Harley-Davidson®? Go big with Rockford Fosgate's HD14 Stage 2 kit.

2 questions - 2 answers

Item # 575HD14ST2

Low stock

About the Rockford Fosgate HD14-STG2

Jon Paul

Better sound for your Road Glide or Street Glide

Ready to upgrade the sound on your 2014-up Harley-Davidson®? Go big with Rockford Fosgate's HD14 Stage 2 kit. Designed to fit your Harley, this package features 6-1/2" fairing speakers and a compact, weather-resistant 4-channel amplifier with an user-friendly amplifier kit. It's a big step up in audio for your Harley.

Better sound for your Road Glide or Street Glide

Ready to upgrade the sound on your 2014-up Harley-Davidson®? Go big with Rockford Fosgate's HD14 Stage 2 kit. Designed to fit your Harley, this package features 6-1/2" fairing speakers and a compact, weather-resistant 4-channel amplifier with an user-friendly amplifier kit. It's a big step up in audio for your Harley.

Rockford Fosgate Harley-Davidson speaker kit

Better fairing speakers mean better sound

Phenomenal sound for the fairings

The Stage 2 package includes two Rockford Fosgate TMS65 6-1/2" speakers that will fit right into the fairing locations on your Harley-Davidson. These rugged, weather-resistant coaxial speakers will really boost your bike's audio quality, packing a lot of sonic punch into a rugged, road-ready design. The big VAST (Vertical Attach Surround Technique) surrounds give the speakers 25% more cone area without compromising ease of installation. The result? You'll get more performance from a smaller speaker, which is pretty much the ideal for a motorcycle.

A compact, powerful amp

Rockford Fosgate's M5-800X4 4-channel amplifier uses Rockford Fosgate's proprietary Class AD technology to draw big power with less current draw from your bike's electrical system. It's made for the road, with conformal-coated circuitry and stainless steel hardware. This compact amp rocks hard and runs cool, even when it's tucked into a tight space. You'll install the amp using the included RFK-HD14 kit which includes everything you need for the job, from mounting plate and wiring harnesses right down to the screws.

Compatibility Note: This kit is designed to work with select 2014-up Harley-Davidson motorcycles — please identify your bike so we can tell you if this package will work.

Important Note: All 2014-up Harley-Davidson radios use a “high fidelity” EQ curve which will cause severe distortion (and potential speaker damage) in any audio upgrade. You'll need to get your radio reflashed by your local authorized Rockford Fosgate motorcycle audio dealer.


Product highlights:

  • system includes two 6-1/2" fairing speakers, a 4-channel amp, and an amp wiring kit
  • designed for select 2014-up Harley-Davidson models
Rockford Fosgate TMS65 6-1/2" full-range speakers
  • designed for your Harley's fairing speaker locations
  • Element-Ready design is weather- and water-resistant
  • power handling: 75 watts RMS (150 watts peak)
  • warranty: 2 years
Rockford Fosgate M5-800X4 marine/powersports 4-channel amplifier
  • Class AD amp technology
  • 100 watts RMS x 4 at 4 ohms (400 watts peak)
  • conformal-coated circuit board — suitable for power sports and marine applications
  • twin cooling fans and real-time thermal sensing
  • includes Rockford Fosgate RFK-HD14 amplifier kit
  • radio must be re-flashed by an authorized Rockford Fosgate motorcycle audio dealer.
  • warranty: 2 years
  • MFR # HD14-STG2

What's in the box:

  • Rockford Fosgate contact and radio flashing information
  • M5-800X4:
  • 4-Channel powersports amplifier
  • 11" Power/ground/turn-on & speaker output harness (installed on amp)
  • 11" Input harness (installed on amp)
  • Two 14" RCA-to-Molex input adapters
  • Power/ground/turn-on adapter plug
  • Two 7.5" speaker output harnesses
  • 3mm Allen key
  • TMS65:
  • Two 2-way speakers
  • 2 Street Glide grilles
  • 2 Road Glide grilles
  • 2 Tour-Pak grilles
  • Installation manual (En/ Fr/ Sp/ Others)
  • RFK-HD14M5:
  • 1 Amp mounting bracket
  • 1 Heatsink
  • 34" T-harness
  • 65" Power/ground harness w/ inline 60A Maxi fuse
  • 20" Amplifier output harness
  • 12" Amp output harnress
  • 16" Fairing harness
  • 2 Amp output Y-adapters
  • 5 Amp bypass plugs
  • Eight 8" wire-ties
  • 4 Threaded post adapters
  • Two 16mm bolts
  • Four 18mm counter-sunk screws
  • Four 10mm counter-sunk screws
  • Four 8mm hex-socket screws
  • 2 Flange-nuts
  • Installation guide

Customer reviews for Rockford Fosgate HD14-STG2

Loading reviews...

Average review:

5.0 out of 5 stars
2 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)

Reviewed on

This review was collected as part of a promotion



Crutchfield response
Customer provided image, click to load a larger version.
<< >>

More details on the Rockford Fosgate HD14-STG2

Stacey B.
The Rockford Fosgate HD14-STG2 replaces these items:

Product Research

M5-800X4 Amplifier


System Overview: The Rockford Fosgate HD14-STG2 sound system has been specifically designed for installation on select 2014-2022 Harley-Davidson motorcycles.

  • Note: To retain proper fidelity and avoid speaker damage, your factory radio will need to be flashed by an authorized Harley-Davidson dealer after installing the Rockford Fosgate sound system.

Compatibility: The HD14-STG2 sound system is compatible with the following model Harley-Davidson motorcycles:

Year Make Model Chassis
2021 Harley-Davidson Electra Glide Revival FLH
2015-2022 Harley-Davidson Road Glide FLTRX
2022 Harley-Davidson Road Glide ST FLTRXST
2015-2022 Harley-Davidson Road Glide Special FLTRXS
2014-2022 Harley-Davidson Stree Glide FLHX
2022 Harley-Davidson Street Glide ST FLHXST
2018 Harley-Davidson Street Glide 115th Anniversary FLHX
2014-2022 Harley-Davidson Street Glide Special FLHXS
2018 Harley-Davidson Street Glide Special 115th Anniversary FLHXS
2020-2022 Harley-Davidson Road Glide Limited FLTRK
2016-2019 Harley-Davidson Road Glide Ultra FLTRU
2014-2019 Harley-Davidson Electra Glide Ultra Classic FLHTCU
2014-2016 Harley-Davidson Electra Glide Ultra Classic Twin-Cooled FLHTCU
2014-2022 Harley-Davidson Ultra Limited FLHTK
2018 Harley-Davidson Ultra Limited 115th Anniversary FLHTK
2017-2022 Harley-Davidson Ultra Limited Shrine Edition FLHTK

Note: Not compatible with CVO Road King, CVO Softail Deluxe, Road King, Road King Classic, Road King Special, CVO Ultra Limited, CVO Limited 115th Anniversary, CVO Pro Street Breakout, CVO Road Glide, CVO Road Glide Limited, CVO Road Glide Ultra, CVO Softail Breakout, CVO Street Glide, Freewheeler, Tri Glide Ultra, Tri Glide Ultra 115th Anniversary, and CVO Tri Glide.

M5-800X4 Amplifier

Amp Overview: The Rockford Fosgate M5-800X4 is a 4-channel powersports amplifier with a rated power output of 100 watts per channel at 4-ohms or 2-ohms. This Element Ready amplifier can be used on motorcycles, ATVs, UTVs, or boats, and can withstand harsh environmental conditions.

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for determining an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4O load with 1% or less Total Harmonic Distortion plus noise (THD+N). CEA-2006 allows consumers to compare amplifiers and receivers under identical conditions. The CEA-2006-rated RMS power output is 100 watts RMS x 4 channels. Additionally the power output is 100 watts RMS x 4 channels into 2O and 200 watts RMS x 2 channels bridged (into 4O).

Element Ready: Rockford Fosgate's Element Ready Amplifiers are protected against dust, UV rays, and corrosion. Marine-grade, two-part epoxy-coated circuit boards are used to prevent corrosion due to exposure in moist and humid places. In addition, stainless hardware is used to help prevent rust and corrosion of all electrical connections. The M5-800X4 carries an IPX6 rating, making it impervious to water spray.

Class-AD: The M5-800X4 features Rockford Fosgate's proprietary Class-AD technology, which allows the amplifier to produce more power with less current draw from the vehicle's charging system.

MEHSA 4 Cooling: The amplifier features Rockford Fosgate's MEHSA 4 (Maximum Efficiency Heat Sink Application) technology that reduces MOSFET temperatures, lowers distortion, increases durability, and prolongs the output circuitry's life span.

DSM (Discrete Surface Mount): High speed robotics are used in the manufacturing process to place 1% tolerance parts and large board traces. DSM improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.

CLEAN Set-Up: Rockford's integrated level setting technology, CLEAN (Calibrated Level Eliminates Audible Noise), replaces sophisticated test equipment with input/output clip LEDs, allowing you to match the source unit's output to the amp's gain, and optimize the amp's output. The input clip indicator works in conjunction with the audio source volume, illuminating red when the source reaches its clipping point. The output clip indicator works in conjunction with the input level dial on the amp, illuminating the appropriate color depending on the audio content used for the setup.

PRESET: The M5-800X4 features Rockford Fosgate's PRESET setting (On/Off) that eliminates the need to set-up the amplifier when used with a compatible Rockford Fosgate ATV/UTV audio kit. When set to On, the PRESET circuitry automatically optimizes the front & rear input levels, Punch EQ, and crossover settings. If manually setting these adjustments, the PRESET switch should be set to the Off position.

Input Level: The amplifier has dual input level controls for the front and rear channels, conveniently accessible from the top. To accommodate the varying range of signal levels from today's factory and aftermarket radios, the input levels are adjustable from 150mV to 12V. A small flat-head screwdriver (not supplied) is needed to adjust the levels.

Input Switch: With the input switch in the 2-channel position, connecting only the front inputs will send the signal to both the front and rear sections of the amplifier. In the 4-channel position, both front and rear inputs must be used.

Crossover: The amplifier has dual built-in crossovers for the front and rear channels, variable from 50Hz to 250Hz with a slope of 12dB/octave. They can be independently set to high-pass, all-pass (full range), or low-pass operation. The rotary frequency settings can be adjusted with a small screwdriver.

Punch EQ: The amplifier has dual Punch EQ functions that change with the crossover switches. When the crossover is set to low-pass, the Punch EQ acts as a variable bass boost; 0 to +18dB at 45Hz. When the crossover is set to high-pass, the Punch EQ acts as a variable treble boost, 0 to +14dB at 12.5kHz. When the crossover is set to all-pass, both the bass and treble boost circuits are active.

Power Connections: The M5-800X4's power, ground, and remote turn-on terminals are located on a single 11" harness with matching adapter. The adapter accepts up to 8 AWG wire (recommended) and features set-screws for locking the wire in place. The power/ground harness is combined with the speaker output harness and attached to the amp in one large connector that's held in place with 2 hex-socket screws.

Fuse: The amplifier does not have an on-board fuse. A 60-amp fuse should be placed on the power wire within 18" of the battery.

Speaker Connections: The amplifier is equipped with two 11" speaker output harnesses which are combined with the power/ground harness to one connector at the amplifier. Two 7.5" speaker harnesses plug into the output harnesses and provide bare-ended wire for connection to your speakers. Speaker outputs can be bridged to provide two 2 x 400W @4O outputs, or be wired for a 3-channel mode with only 2 speaker outputs bridged.

Signal Input: The amplifier's Differential Inputs will accept either a line-level or speaker-level input on the Molex-style connectors. A single amp connector, secured with hex-socket screws to the amp, features two 4-pin Molex connectors on the other end for connecting the included input adapter harnesses. Each input adapter harness has a 4-pin Molex plug on one end and dual RCAs on the other end. Front and rear line-level signals can simply be connected via RCA cables from the source unit to each input harness. For a speaker-level signal, you can cut the RCA connectors from the input harnesses and splice the wires to the speaker wires of the source unit. When using a speaker-level input signal, the auto turn-on feature is active and the remote turn-on terminal becomes a 12 volt output, which can be used to turn on/off an additional amplifier or other component.


TMS65: The TMS65 6-1/2" full-range coaxial speakers are designed to fit the fairing location. The weather resistant speakers feature a reinforced polypropylene cone, with Santoprene surround and Neodymium motor structure, along with a ultra-efficient 1" dome tweeter. The speakers include grilles and mount in the factory location using the factory hardware.

  • Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Rockford Fosgate optimize the speaker's motor structure, voice coil alignment, and suspension to yield the best possible performance.
  • CEA-2031 Compliant: The power handling specifications conform to the CEA-2031 industry standards; meaning the speaker has the capacity to handle its rated power under continuous demand, not just for an instant.
  • VAST Surround: The Vertical Attach Surround Technique (VAST) increases a speaker's effective radiating cone area without increasing the size of the basket. The surround is made of Santoprene rubber.

RFK-HD14M5 Wiring Kit: The 2014-up Harley-Davidson amplifier wiring kit includes pre-cut, pre-loomed 100% Pure Crystal-Oxygen Free Copper (PC-OFC) wiring for installing the sound system, meeting or exceeding American Wire Gauge (AWG) requirements. It includes 8-gauge power and ground wires for running to the battery, as well as all input and output harnesses for running signal from the headunit to the amp and then on to each individual speaker. The battery power wire includes an inline fuse holder with installed 60A Maxi fuse. The amplifier wiring kit also includes an additional amplifier heatsink, for better heat dissipation at higher volumes, and an amplifier mounting bracket.

Loading accessories...

Customer Q&A

2 questions already asked

Any special procedures needed to install the amp if the factory radio has been replaced. Currently have the Soundstream HDHU.14+ installed. Can I link the main harnesses together?
daniel  Apr 28, 2023
1 answer
Thank you for your question, Dan. If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the installation. Our toll-free Tech Support number is printed on your invoice and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
andrea  Apr 28, 2023 (Staff)
Hd14 stg2. Should I use the bridgable option on the amp to get more power for my fairing speakers?
rus  Sep 25, 2022
1 answer
I would not advise it, Rus. With this matched Rockford setup my main concern there would be that the front speakers are only rated for 75 watts RMS. Now Rockford knows you can pound on their gear and it will handle it, so the amp is actually already 25 watts over the RMS rating of the speakers as is in non bridge mode. The 200 watts per channel in bridge mode is just simply too massive for those TMS65 6-1/2 speakers, they would almost certainly be damaged. I hope this helps Rus!
bo  Sep 25, 2022 (Staff)

Loading articles...

Compare the sound