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Variants
The HD14U-STG2 (Gen-3) is a high-performance M5 audio kit engineered for 2014–2023 Harley-Davidson Ultra models. It’s built to provide high-output, clear sound on the open road while matching factory fit and finish.
Buyer confidence
88%Highlights
- Speakers custom tuned to hear music over wind, road & exhaust noise at highway speed
- 2-Year Warranty
- Plug-and-Play design for easy installation
- Kits bolt to factory attachment points
Key specs
Full specs- Speaker Qty
- 4
- Amplifier Type
- External
- Total Power
- 800 Watts
- Grille/Trim Ring Included
- Yes
- Mounting Hardware
- Yes
- Included In The Box
- (2 pr) TMS65 (1 ea) M5-800X4 (1 ea) RFK-HD14M5
Key specs
Full specs- Speaker Qty
- 4
- Amplifier Type
- External
- Total Power
- 800 Watts
- Grille/Trim Ring Included
- Yes
Highlights
Overview- Speakers custom tuned to hear music over wind, road & exhaust noise at highway speed
- 2-Year Warranty
- Plug-and-Play design for easy installation
Overview
The HD14U-STG2 (Gen-3) is a high-performance M5 audio kit engineered for 2014–2023 Harley-Davidson Ultra models. It’s built to provide high-output, clear sound on the open road while matching factory fit and finish.
Best for
- Riders of 2014–2023 Harley-Davidson Ultra models who want a factory-fit
- high-output amplified audio upgrade that overcomes wind
- road
- and exhaust noise.
Key points
- System power: 800W total via a 4-channel amplifier.
- Speakers included: (2) 6.5" fairing speakers and (2) 6.5" tour‑pak speakers.
- Design: Plug-and-play components engineered for factory fit and finish (RF3).
- Road-ready output: Tuned to maintain clarity and presence at freeway speeds.
- Upgrade paths: Add a 6.5" lower speaker for air-cooled lowers; add 6x9" saddlebag speakers for Stage-3; Stage-5 adds saddlebag 6x9s plus a 10" dual sub kit.
- Durability features: corrosion protection, dust resistance, UV inhibitors, thermal shock and vibration resistance, stainless hardware, Element Ready™ motorcycle rating.
Fit and use
Components are purpose-built to the factory specifications for a near–OEM appearance and simplified installation. The kit is intended to integrate with the bike’s existing audio locations and wiring using the provided plug-and-play harness and amp installation kit.
What to know
You must flash your factory radio to use this kit; follow the manufacturer’s radio-flash guidance and dealer list where applicable. Verify fitment against the product compatibility chart before purchasing. Upgrade options are available for additional lows and saddlebag output; some upgrades are specific to bike and lo…
Highlights
Key features
- Speakers custom tuned to hear music over wind, road & exhaust noise at highway speed
- 2-Year Warranty
- Plug-and-Play design for easy installation
- Kits bolt to factory attachment points
- Direct connect wiring harnesses for Harley-Davidson® models
- TMS65: 6.5" 2-way Element Ready™ speaker with integrated phase-aligned 25 mm tweeter
- M5-800X4: 800-watt 4-channel IPX6 Element Ready™ amplifier
- RFK-HD14M5: Amp install kit for M5-800X4 on 2014+ Harley-Davidson® models
- Y-adaptors supports expansion of speakers in lower fairing, saddlebag, or Tour-Pak®
- T-harness supports front/rear fader (requires flash: "Rockford Fosgate 2014+ All Bikes")
- T-harness features loop-thru for Digital Signal Processor (DSR1 sold separately)
- 90-degree harness included with amp install kit for Road Glide® installations
Technologies
Corrosion Protection
Components are tested for salt spray corrosion resistance.
Dust Resistant
Displays and motor structures are sealed tight so they look and sound as clear as possible no matter how many
UV Inhibitor Materials
Centrex and ASA plastic materials are used for their UV radiation resistance and components are tested in
Thermal Shock Resistant
Components are designed to withstand extreme temperature fluctuations ensuring they perform day-in and day-out.
Vibration Resistant
Components are able to withstand shock and vibration conditions common with outdoor vehicles.
Stainless Hardware
Stainless hardware is used to its natural resistance to corrosion and rusting. This ensures electrical connections
Plug & Play
This product is designed for rapid installation using pre-configured wiring harnesses and quick connect terminals.
Element Ready™ | Motorcycle
All components are protected against harsh outdoor elements like Dust, UV, Temperature, Water, Corrosion &
Rockford Factory Fit & Finish
Designed and engineered to compliment the factory fit and finish of your vehicle. These components are
Specs
Specifications
6
| Speaker Qty | 4 |
| Amplifier Type | External |
| Total Power | 800 Watts |
| Grille/Trim Ring Included | Yes |
| Mounting Hardware | Yes |
| Included In The Box | (2 pr) TMS65 (1 ea) M5-800X4 (1 ea) RFK-HD14M5 |
What's in the box
| Qty | Part number | Item details |
|---|---|---|
| 2 pr | — | TMS65 |
| 1 ea | M5-800X4 | Included component |
| 1 ea | RFK-HD14M5 | Included component |
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Compatibility
YESModel IS compatible |
NOModel NOT compatible |
NOT AVAILABLEModel not produced this year |
|---|
REQUIREDBOOM!™ Box 4.31 |
REQUIREDBOOM!™ Box 6.5GT1 |
REQUIREDBOOM!™ Box GTS1 |
REQUIREDH-D® Tour-Pak |
|---|
| MODEL | CHASSIS | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
|---|---|---|---|---|---|---|---|---|---|---|
| Electra Glide® Revival | FLH | — | — | — | — | — | — | — | X | — |
| Electra Glide® Standard NR | FLHT | — | — | — | — | — | X | X | X | X |
| Road Glide® | FLTRX | — | X | X | X | X | X | X | X | X |
| Road Glide® ST | FLTRXST | — | — | — | — | — | — | — | — | X |
| Road Glide® Special | FLTRXS | — | X | X | X | X | X | X | X | X |
| Street Glide® | FLHX | X | X | X | X | X | X | X | X | X |
| Street Glide® ST | FLHXST | — | — | — | — | — | — | — | — | X |
| Street Glide® 115th Anniversary | FLHXANV | — | — | — | — | X | — | — | — | — |
| Street Glide® Special | FLHXS | X | X | X | X | X | X | X | X | X |
| Street Glide® Special 115th Anniversary | FLHXSANV | — | — | — | — | X | — | — | — | — |
| MODEL | CHASSIS | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
|---|---|---|---|---|---|---|---|---|---|---|
| CVO Road King® | FLHRSE | X | — | — | — | — | — | — | — | — |
| CVO Softail Deluxe | FLSTNSE | X | X | — | — | — | — | — | — | — |
| Road King® | FLHR | — | X | X | X | X | X | X | X | X |
| Road King® Classic | FLHRC | X | X | X | X | X | X | — | — | — |
| Road King® Special | FLHRXS | — | — | — | X | X | X | X | X | X |
| MODEL | CHASSIS | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
|---|---|---|---|---|---|---|---|---|---|---|
| Road Glide® Limited | FLTRK | — | — | — | — | — | — | ✔ | ✔ | ✔ |
| Road Glide® Ultra | FLTRU | — | — | ✔ | ✔ | ✔ | ✔ | — | — | — |
| Electra Glide® Ultra Classic® | FLHTCU | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | — | — | — |
| Electra Glide® Ultra Classic® Twin-Cooled | FLHTCU | ✔ | ✔ | ✔ | — | — | — | — | — | — |
| Electra Glide® Ultra Classic® Low | FLHTCUL | — | ✔ | ✔ | — | — | — | — | — | — |
| Electra Glide® Ultra Classic® Low Twin-Cooled | FLHTCUL | — | ✔ | ✔ | — | — | — | — | — | — |
| Ultra Limited | FLHTK | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Ultra Limited 115th Anniversary | FLHTKANV | — | — | — | — | ✔ | — | — | — | — |
| Ultra Limited Low | FLHTKL | — | ✔ | ✔ | ✔ | ✔ | ✔ | — | — | — |
| Ultra Limited Shrine Edition | FLHTK | — | — | — | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| MODEL | CHASSIS | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
|---|---|---|---|---|---|---|---|---|---|---|
| CVO Ultra Limited | FLHTKSE | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | — |
| CVO Limited 115th Anniversary | FLHTKSEANV | — | — | — | — | ✔ | — | — | — | — |
| CVO Pro Street Breakout | FXSE | — | — | X | X | — | — | — | — | — |
| CVO Road Glide® | FLTRXSE | — | — | — | — | X | X | X | XRF2 | XRF2 |
| CVO Road Glide® Limited | FLTRKSE | — | — | — | — | — | — | — | — | XRF1 |
| CVO Road Glide® Ultra | FLTRUSE | — | ✔ | ✔ | — | — | — | — | — | — |
| CVO Softail Breakout | FXSBSE | X | — | — | — | — | — | — | — | — |
| CVO Street Glide® | FLHXSE | — | X | X | X | X | X | X | XRF2 | XRF2 |
| MODEL | CHASSIS | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
|---|---|---|---|---|---|---|---|---|---|---|
| Freewheeler®NR | FLRT | — | X | X | X | X | X | X | X | X |
| Tri Glide® Ultra Classic® | FLHTCUTG | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Tri Glide® Ultra 115th Anniversary | FLHTCUTGANV | — | — | — | — | ✔ | — | — | — | — |
| CVO Tri Glide® | FLHTCUTGSE | — | — | — | — | — | — | ✔ | ✔ | XRF1 |
GRAY TEXT
indicates nomenclature used on some early models and later inherited.
1
Factory Radio from Harley-Davidson® must be flashed.
Read advisory for more information.
2
H-D® Power Lock for touring luggage not compatible with 6x9" bag-lid kit.
3
Saddlebags must be factory Harley-Davidson® ABS plastic to insure proper fitment with bag-lid and subwoofer kits.
Fiberglass saddlebags and bag-lids not compatible.
4
Stretched Saddlebags not optimized for kits with subwoofers. Contact technical support for suggested harness brace.
5
Tour-Pak® must be detached in order to install and remove subwoofer enclosures.
NR
No Radio equipped from factory. Motorcycle has storage pocket in lieu of infotainment unit.
RF1
RF Stage-1: Not upgradable. Factory equipped with "Harley-Davidson Audio Powered by Rockford Fosgate" 2-way speakers and saddlebag amplifier.
RF2
RF Stage-2: Not upgradable. Factory equipped with "Harley-Davidson Audio Powered by Rockford Fosgate" 3-way speakers and saddlebag amplifier.
— Harley-Davidson®, H-D®, Road King®, Road Glide®, Street Glide®, Ultra Classic®, Tri Glide®, Freewheeler®, and Tour-Pak® are Registered Trademark of Harley-Davidson USA, Inc.
— Boom!™ is a Trademark of Harley-Davidson USA, Inc.
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