Motorcycle Radios
Motorcycle radios and head units for Harley-Davidson touring and bagger builds. Upgrade the head unit with correct fitment and clean integration so the rest of your audio system performs as intended.
Pick a motorcycle radio by year: 1998-2013 Harleys take the Rockford PMX-HD9813 or Diamond MSHD9813, 2014-2023 the PMX-HD14 or Diamond 7". 2024-Present bikes add wireless CarPlay. Road King has no fairing: run a Bluetooth streamer.
THE REFERENCE STANDARD
Build It Right the First Time
Not sure which parts fit your exact bike and setup? Start with a clean, correct plan.
- Fitment confirmed for your exact bike and year
- Parts matched to your speakers and amplifier
- Build help from a GBS specialist
Browse Collections
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SaleVinland Rebel RBHT14 8.25" Harley Radio | 2014-2023 Touring
Vendor:VinlandThe Vinland Rebel RBHT14 is an 8.25-inch touchscreen radio for compatible 2014-2023 Harley-Davidson Touring models.Related: motorcycle radios, radio installation parts.Not sure what fits your bike? Start a build consultation or call 864-334-6131.Sale -
Diamond Audio 7" Plug & Play Head Unit | 2014 - 2023 Harley-Davidson Touring
Vendor:Diamond AudioPlug-n-Play Replacement Head Unit for 2014-23 Harley Davidson® Touring Motorcycles NOW Shipping! With Apple CarPlay®, Android Auto® Product Highlights: Wireless Android Auto Wireless Apple CarPlay idatalink Maestro built-in and pre-flashed when shipped Onboard Digital Sound Processor (DSP) ADVANCED ONBOARD DSP13 BAND PARAMETRIC EQSELECTABLE CROSSOVER CONTROL HP/LP/BPSELECTABLE CROSSOVER SLOPE Weather Proof Continuous power output: 28x4 Max power output: 50x4 6 channel RCA Pre-Out voltage: 5V RMS AM/FM/WB Continuous Power 28x4 at 4Ω Max Power 50x4 2Ω Built-in Bluetooth Built-in WiFi Advanced onboard DSP: 13 band parametric EQ, selectable crossover control HP/LP/BP, selectable crossover slope Utilizes factory USB for phone charging and USB playback of music Maestro built-in for advanced vehicle data & Boom Audio 2 amplifier turn-on Factory fit (no additional harnesses needed Advanced audio IC chip for superior audio reproduction Model MSHDHU14 2-year warranty Available for 14-23 Police Edition and Electra Glide Standard It does not work with CB. It will not work with any aftermarket motor tuner. Now works with Thundermax tuners ATTENTION- INTERNAL RR2 MODULE MUST BE PROGRAMMED ON A COMPUTER BEFORE STARTING INSTALL, RADIO WILL NOT POWER UP BEFORE IT IS PROGRAMMED CLICK HERE to download the Maestro RR2 Programming Manual Digital Sound Processor Your bike and music are as unique as you are. With a Diamond Audio in-dashreceiver, sound quality features like a 13-band Graphic Equalizer with a touch panelswipe settings and built-in high/low pass crossover with adjustable points andslopes provide you with the controls to tailor the listening experience to yourvehicle and listening preferences Diamond Audio's 2014-2022 radio replacement for Harley-Davidson Street Glide and Road Glide Motorcycles. The MSHDHU14 radio allows for many added features, including Wireless Apple CarPlay and Android Auto, for the ultimate hands-free experience. Pre-Programed. Internal Maestro Radio Replacement Interface for CAN Bus integration and vehicle data allows for selectable on-screen data such as RPM, Voltage, Temp, Throttle position, and many others, as well as space-saving and ease of installation. Built-in 6ch DSP, AM/FM + Weather band, 40x4 Watts Internal Power, 6 Full Range 5V pre-outs, the fastest available processor for quick response, ultra-bright sunlight viewable display, glove compatible touch screen, integrated. -
Rockford Fosgate 2014-2023 Harley Davidson® PMX-HD14 Radio
Vendor:Rockford FosgateWORKS WITH AFTERMARKET TUNERS Infotainment Source Unit for Select 14-23 Harley-Davidson Models FEATURES AT A GLANCE 7" full color, glove-friendly, capacitive multi-touch screen WORKS WITH AFTERMARKET TUNERS NO FLASHING Required NO External modules required 2014-2023 Harley-Davidson® direct replacement digital media receiver Plug and Play Installation with OEM electrical connectors Retains factory thumb control functionality with no additional parts Works with wireless headsets and OEM CB (WHIM & CB modules required) No need to flash your bike Glove-friendly touch controls Bluetooth® connectivity with A2DP wireless audio streaming Apple CarPlay® built-in SiriusXM® Ready (requires SiriusXM® tuner, sold separately) Optimized DSP presets for all 2014-2023 Rockford Fosgate H-D stage kits Street Party Mode™ can broadcast audio up to 100 feet to 8 additional PMX-HD14 Digital AM/FM/WB tuner with presets Built-in DSP with Subwoofer control USB Input with 1.5A USB Charging AUX Input 14-band graphic EQ Multi-region radio frequencies Software updatable via USB 2-Year Warranty *Antenna not included ICONIC PERFORMANCE The PMX-HD14 source unit was purpose-built to deliver iconic performance with class-leading features like Apple Car Play®, plug-and-play installation, CB wireless headset connectivity, and Street Party Mode™, which allows you to pair and stream the same music across each radio simultaneously. The PMX-HD14 includes these accessory trim bezels: • (1) Batwing Trim Bezel (Street Glide) • (1) Sharknose Trim Bezel (Road Glide) Full-Color Display: Equipped with a 7” TFT display, this ultra-crisp infotainment center looks fantastic and features full touchscreen functionality that even works with riding gloves. Complete Control: Control however you want it. This source unit keeps all factory handlebar controls as well as CB and wireless headset connectivity, without additional parts, and with built-in Apple Car Play®, controlling your playlists and apps has never been easier. Optimized Tunes: Designed specifically for your current Rockford Fosgate motorcycle audio system, we have optimized speaker-specific location tunes, so no matter your current audio system you will get class-leading sound. Street Party Mode™: Bring the party to the streets. Street Party Mode allows everyone to pair and stream the same song through each connected PMX-HD14 radio. DOES NOT WORK WITH ANDROID AUTO Video PMX-HD14 Lifestyle PMX-HD14 Quick Start Guide PMX-HD14 2014-2023 Harley Davidson Street Glide Install PMX-HD14 2015-2023 Harley Davidson Road Glide Install PMXHD-14 Software Updates -
SaleDiamond Audio MSHD9813SG - Plug N-Play Radio 1998-2013 HD Street Glide
Vendor:Diamond AudioDiamond Audio MSHD9813SG - Plug N-Play Digital Media Receiver for 1998-2013 Harley Davidson Street Glide You are introducing the MSHD9813SG Plug N-Play Digital Media Receiver for 1998-2013 Harley Davidson motorcycles – the pinnacle of audio and media performance on t e road. Proudly designed in the USA, this high-end Harley radio is engineered to redefine your riding experience with unmatched features and cutting-edge tec ology. Upgrade your ride with the MSHD9813SG Plug N-Play Digital Media Receiver – where cutting-edge technology meets ultimate convenience and perf rmance. Get ready to experience the very best Harley radio on the market today. Superior Sound Performance 10 Channel - Clip-Free Independent Outputs: Experience the most transparent audio with (6) 5V RMS RCA outputs and (4) 50x4@2Ω/25x4@4Ω RMS clip-free outputs. Wireless Apple CarPlay: Seamlessly integrate your iPhone with the wireless Apple CarPlay feature, providing you with effortless access to music, navigation, and more. Advanced Display & Controls 7" Ultra-Bright, 1000 NIT LCD Touchscreen: This glove-friendly touchscreen is designed for visibility and ease of use, even under the brightest conditions. Ultimate Sound Customization 6 Independent EQs: One global and five setup EQs allow for the ultimate sound customization, ensuring your audio is perfectly tuned. 10CH DSP Features: It includes a time delay, HP/LP/BP crossovers with adjustable slopes, and independent channels that can be linked or separated from fader control. Durability & Compatibility IPX6 Water Resistance: Comes with a weatherproof trim gasket, ensuring durability in all riding conditions. Media Player & Bluetooth 5.2: This device supports a wide range of media formats, including MP3, AAC, WMA, and more. It also supports Bluetooth streaming and hands-free calling. USB Media Input/Charger: Equipped with a 2.1A charger to keep your devices powered on the go. Backup Camera Input: Enhance your safety with a compatible backup camera input. Innovative Features Multiple Patented Technologies: The MSHD9813SG sets a new standard in motorcycle audio systems, boasting numerous patented features and technologies.Sale -
SaleDiamond Audio MSHD9813RG - Plug N-Play Radio 1998-2013 HD Road Glide
Vendor:Diamond AudioDiamond Audio MSHD9813RG - Plug N-Play Digital Media Receiver 1998-2013 Harley Davidson Road Glide Introducing the MSHD9813RG Plug N-Play Digital Media Receiver for 1998-2013 Harley Davidson motorcycles – the pinnacle of audio and media performance on the road. Proudly designed in the USA, this high-end Harley radio is engineered to redefine your riding experience with unmatched features and cutting-edge technology. Upgrade your ride with the MSHD9813RG Plug N-Play Digital Media Receiver – where cutting-edge technology meets ultimate convenience and performance. Get ready to experience the very best Harley radio on the market today. Superior Sound Performance 10 Channel - Clip-Free Independent Outputs: Experience the clearest audio with (6) 5V RMS RCA outputs and (4) 50x4@2Ω/25x4@4Ω RMS clip-free outputs. Wireless Apple CarPlay: Seamlessly integrate your iPhone with the wireless Apple CarPlay feature, providing you with effortless access to music, navigation, and more. Advanced Display & Controls 7" Ultra-Bright, 1000 NIT LCD Touchscreen: This glove-friendly touchscreen is designed for visibility and ease of use, even under the brightest conditions. Ultimate Sound Customization 6 Independent EQs: One global and five setup EQs allow for the ultimate sound customization, ensuring your audio is perfectly tuned. 10CH DSP Features: This includes a time delay, HP/LP/BP crossovers with adjustable slopes, and independent channels that can be linked or separated from fader control. Durability & Compatibility IPX6 Water Resistance: Comes with a weatherproof trim gasket, ensuring durability in all riding conditions. Media Player & Bluetooth 5.2: This product supports a wide range of media formats, including MP3, AAC, WMA, and more. It also supports Bluetooth streaming and hands-free calling. USB Media Input/Charger: Equipped with a 2.1A charger to keep your devices powered on the go. Backup Camera Input: Enhance your safety with a compatible backup camera input. Innovative Features Multiple Patented Technologies: The MSHD9813RG sets a new standard in motorcycle audio systems, boasting numerous patented features and technologies.Sale -
Rockford Fosgate 98-13 Harley Davidson PMX-HD9813 Plug and Play Radio
Vendor:Rockford FosgateThe Rockford Fosgate PMX-HD9813 is a plug-and-play digital media receiver for 2006-2013 Street Glide and 1998-2013 Road Glide and Electra Glide models, with a 3-inch color display and 4-volt preamp outputs.Key Specs 3-inch color TFT display with day/night modes Front, rear and sub RCA outputs at 4V max 25W x 4 at 4 ohms RMS; 50W x 4 at 2 ohms max Bluetooth audio streaming, USB input with 1.5A charging, AUX input 7-band graphic EQ, selectable HP/LP/AP crossover Retains factory thumb controls; 2-year warranty Fitment and Installation NotesNot compatible with factory amplified systems, CB, intercom, rear volume controls or factory satellite radio. Rear speaker outputs need a separate harness, and the antenna is not included.Browse more: motorcycle radios and Rockford Fosgate, or get a custom build planned around your bike.Not sure what fits your bike? Start a build consultation or call 864-334-6131. -
SaleDS18 Marine And Powersports Waterproof Rocker Switch
Vendor:DS18DS18 Bluetooth Audio Receiver With Controls Marine and Powersports Rocker Switch Audio Streamer AUX In/ RCA Output Remote Output IOS and Android Compatible Compact Design Water Resistant IP65Sale -
Metra Wireless Bluetooth Controller
Vendor:MetraThe Metra Wireless Bluetooth Controller adds Bluetooth audio to an amplifier with RCA inputs, and a single knob handles track, volume, power, source, play/pause and pairing.Key Specs Universal adapter included for amplifiers with RCA inputs Built-in line driver gives 3x voltage output through front, rear and sub RCAs Fits the industry-standard 1.45" x 0.83" opening Bluetooth 4.0; plays from any media player with a 3.5mm aux output Remembers paired devices and reconnects automatically Power 14.4V; RCA output 2V RMS Fitment and Installation NotesMetra does not list specific vehicles for this controller; confirm the mounting opening and amp inputs before ordering.Browse more: motorcycle radios and motorcycle amplifiers, or get a custom build planned around your bike.Not sure what fits your bike? Start a build consultation or call 864-334-6131. -
SaleMMats Pro Audio All Weather Media Center 7" Screen
Vendor:MMats Pro AudioThe MMats Pro Audio M7450 All Weather Media Center is a 7-inch touchscreen receiver with wireless CarPlay and Android Auto, rated IP66 for motorcycle use.Key Specs Display: 7" color TFT touchscreen Waterproof rating: IP66 Power: 22W x 4 at 4 ohms RMS; 50W x 4 peak at 2 ohms Operating voltage 10.5V-16V; 15A fuse Bluetooth A2DP, USB 2.0 (1A output), AUX in, WiFi FM 87.5-107.9 MHz with 18 presets; AM 530-1710 kHz with 12 presets; 4V RCA output; 3-zone control Browse more: motorcycle radios and MMats Pro Audio, or get a custom build planned around your bike.Not sure what fits your bike? Start a build consultation or call 864-334-6131.Sale -
SaleRoadie Splash Covers for Harley Davidson
Vendor:Speed RingsProtect your aftermarket radio from the elements with the Roadie Splash Cover "When you're on the Road, Roadie's got you covered." Formerly known as Shimmy's Cover, the Roadie Splash Cover has returned with improvements including a revamped design and increased durability. Designed to protect your radio on 2014-2023 Harley-Davidson motorcycles and 1998–2013 Metra motorcycles, this updated version features improved components molded for stronger structural integrity, quicker production, and an enhanced riding experience. Guarantee Higher-Quality Sound on the Road Your motorcycle audio system is a major investment. The Roadie Splash Cover helps protect it from the harshest elements by shielding it from rain, dust, dirt, and debris. While it won’t make your system weatherproof, it adds an extra layer of protection for aftermarket electronics that helps enhance your radio’s longevity and sound performance. Keep your ride loud and clear, no matter the road conditions. Shield Your Motorcycle’s Electronics From the Elements This motorcycle radio cover features a two-piece system: a bottom base that adheres securely to your inner fairing using the included 3M double-sided tape or silicone, and a top cover that screws in with an overlapping lip to deflect water and grime. Although the touch screen isn’t accessible when the cover is on, your bar controls will remain fully functional, ensuring safe and simple operation while riding. The radio can not be touched while the cover is on, bar controls must be used instead. Fits with Harley Davidson and Metra Motorcycles The Roadie Splash Cover is compatible with Harley-Davidson models from 2014-2023 and 1998–2013 Metra motorcycles. Its ergonomic shape blends seamlessly with your bike’s dash, offering low-profile protection that doesn’t interfere with your aesthetic or functionality. Made specifically for these models, it ensures a snug fit and long-lasting hold. The radio cover is designed to help protect your investment in your Harley Davidson motorcycle. It ensures quality sound in the elements, increasing your radio's functionality. This product helps shield your radio from rain, dust, dirt, and other debris. These are Splash covers; they DO NOT make the unit weather-proof; they add protection to your aftermarket electronics. The radio can not be touched or the touch screen used while the cover is on. You must use bar controls when the cover is on. Return Policy—If you return the item because you do not like the way it looks or fits, a return shipping fee plus a 20% restocking fee applies. We have pictures of every single one we sell installed on the motorcycles. Be sure you know what you are ordering, how it installs, and how it looks when both pieces are assembled on your motorcycle. If you have questions, please call the shop at 864-334-6131. Check out this review from Carlos Ramirez from NVS Audio: These will come pre-packaged and ready for installation *No need to remove your radio to install* Easy to install in minutes and protects from the elements. Kit Contents Top and bottom Roadie Splash cover Roll of 3M tape to secure the fairing to your bike Alcohol wipe 3M promoter wipe Key Features 3-D CAD scanned and recreated for maximum protection Injection molded design Nutserts added to the base plate Sleeker ergonomic design for your radio controls No glued parts for clean assembly and better performance Rubber washer on top screws to retain rain/water resistance *Please note these covers are designed around the inner fairing on your bike, not a specific radio. Plus, the stock ignition switch. Some aftermarket covers could hit the splash cover* Check out our Roadie Splash Cover on a Harley Davidson.Sale -
Soundz Wireless Android Auto Interface — HS-5522 for 2024-Present Harley Skyline OS
Vendor:SoundzThe Soundz HS-5522 adds wireless Android Auto to 2024-Present Harley-Davidson Touring motorcycles with Skyline OS, without replacing the radio. It connects through the factory USB-C port.Key Specs Fitment: 2024-Present Harley-Davidson Touring with Skyline OS Connection: USB-C Phone requirement: Android 10.0 or higher (some phones may need Android 11.0) Wi-Fi and Bluetooth must both be enabled In the box: HS-5522 interface and HS-5517 underseat headset bypass adapter Fitment and Installation NotesIf the underseat accessory port is already used by a heated seat or another accessory, the Soundz HS-5515 splitter (sold separately) may be required.Related: Soundz and Radio Installation Parts. Need something custom? Our custom build team can help.Not sure what fits your bike? Start a build consultation or call 864-334-6131. -
Audio Control Weather Proof Bluetooth Audio Streamer
Vendor:Audio ControlThe AudioControl Weather Proof Bluetooth Audio Streamer is a compact Bluetooth receiver with dual line-level RCA outputs, built to add wireless audio streaming to an amplifier or processor. Its IPX5-rated enclosure and built-in fuse suit exposed mounting locations.Key Specs Bluetooth 4.1 with aptX HD compatibility, 24 bit / 48 kHz streaming from aptX devices Output: dual line-level RCA, nominal 1.5 Vrms Signal-to-noise ratio: 95 dB Operating range: 10+ meters, depending on environment Current draw: 35 mA; built-in 2 A fuse IPX5-rated enclosure, 2.0" L x 2.5" W x 0.7" H, 0.2 lb See how it fits into a full system with our motorcycle radios and digital sound processors, or ask about a custom build.Not sure what fits your bike? Start a build consultation or call 864-334-6131.
Motorcycle Radio Quick Reference
| Collection Type | Motorcycle radios, head units, and wireless CarPlay / Android Auto displays |
| Primary Fitment | Harley-Davidson Touring motorcycles |
| Model Years Covered | 1998-2013, 2014-2023, and 2023+ Touring platforms |
| Radio Styles | Plug-and-play head units, wireless CarPlay / Android Auto displays and adapters |
| Related Accessories | Satellite radio tuners, Bluetooth audio streamers, wireless controllers, and splash covers |
Always confirm your model year, trim, and factory radio type against the product page before ordering a radio or interface.
Motorcycle Radios for Harley-Davidson Touring Bikes
Your radio is the control center of the whole system. This collection brings together motorcycle radios and head units built for Harley-Davidson Touring models, from direct-fit replacements for 1998-2013 bikes to larger-screen options for 2014-2023 and wireless CarPlay and Android Auto upgrades for newer platforms.
Garage Bagger Stereo carries radios and displays from brands including Diamond Audio, Rockford Fosgate, Vinland, ZZ2, Soundz, Sony and MMats Pro Audio, so you can match the head unit to your bike, your budget, and the rest of your build.
A radio only sounds as good as the system behind it. Pairing your head unit with a motorcycle amplifier and speakers sized for your fairing and saddlebags gives you far more volume and clarity at highway speed than the factory setup.
Shop Radios by Model Year and Type
1998-2013 Harley Radios
2014-2023 Harley Radios
2023+ CarPlay / Android Auto
Wireless CarPlay and Android Auto upgrades with accessories.
ZZ2 Displays and CarPlay
BIKE2PLAY wireless CarPlay and Android Auto displays.
Choosing the Right Motorcycle Radio
Start with your model year, because it decides which radio and interface will fit. Next, decide whether you want a direct-fit head unit that keeps the bike looking factory, or a display-based upgrade that adds wireless CarPlay and Android Auto.
- Confirm model year and factory radio type before ordering
- Check whether you need an installation kit or radio interface for your bike. See Radio Installation Parts
- Plan for amplifiers and speakers so the radio has a complete system to drive. See Motorcycle Amplifiers
- Add a DSP when you want tuning control over a larger build. See DSP Processors
Not sure which radio fits your bike? Call 864-334-6131 or start a build consultation and we will point you to the right one.
Motorcycle Radios FAQ
Which plug-and-play radio fits my Harley?
It depends on the year. For 1998-2013 bikes, Rockford Fosgate lists the PMX-HD9813 for 1998-2013 Road Glide, Electra Glide and Street Glide (the Street Glide began in 2006), and Diamond Audio makes separate Road Glide and Street Glide units. For 2014-2023 bikes, look at the Rockford PMX-HD14, the Diamond Audio 7-inch head unit or the Vinland Rebel. On 2024-present bikes the factory radio stays, and amps connect through an A2B interface.
Does the Rockford Fosgate PMX-HD14 need flashing or support Android Auto?
No flashing is needed. Rockford Fosgate says the PMX-HD14 eliminates the need to flash your radio. It has Apple CarPlay built in, but Android Auto is not supported. It adds 4-volt front and rear preamp outputs and onboard DSP. Rockford lists 2014-2023 Street Glide and Road Glide fitment (there was no 2014 Road Glide), notes Ultra models need an extra switchpack for wired headsets, and lists Road King models as not compatible.
What does the Diamond Audio 7-inch Harley head unit need before install?
Programming. Diamond Audio builds a Maestro RR2 CANBUS interface into the radio, and it must be programmed on a computer before it goes in the bike. Diamond states the radio will not power up until it is programmed. After that you get wireless Apple CarPlay, a 10-channel DSP with time delay and crossovers, and six 5-volt RCA outputs. If you already run amps, turn every gain down before connecting.
What are the options for a bike without a factory radio?
Use a weatherproof Bluetooth streamer or a universal media center. Bluetooth streamers like the AudioControl and Metra units in this collection send phone audio straight to an amplifier's RCA inputs, so you do not need a head unit at all. Universal touchscreen media centers mount on the bars or dash. These work on Softails, trikes and custom builds as well as baggers.
Need Help Choosing Motorcycle Radios?
Tell us your bike, year and goals and a Garage Bagger Stereo specialist will help you pick the right parts and plan the install.
Harley Radio Upgrades by Year: 1998-2013, 2014-2023 and 2024-Present
The radio is the one part where the year decides everything. Buy the wrong year and it won't plug in.
- 1998-2013: the Rockford Fosgate PMX-HD9813, or Diamond Audio's MSHD9813RG for the Road Glide and MSHD9813SG for the Street Glide.
- 2014-2023: the Rockford Fosgate PMX-HD14, the Diamond Audio 7" plug and play head unit or the Vinland Rebel RBHT14 8.25" screen.
- 2024-Present: keep the factory Skyline OS screen and add what it's missing. Soundz makes a wireless CarPlay adapter and the HS-5522 wireless Android Auto interface for it.
Road King has no fairing, so none of these fairing radios fit one. A new radio also won't fix tired speakers. Pair it with a 2014-2023 plug-and-play kit if you're doing it right.
Bluetooth Motorcycle Radio Options for Bikes Without a Fairing
No fairing, no dash opening, no problem. On a Road King, a Softail or a custom, a waterproof Bluetooth source runs the show: the AudioControl weatherproof Bluetooth audio streamer, the Metra wireless Bluetooth controller, or the MMats Pro Audio All Weather Media Center 7" screen if you want a display.
A streamer or controller is the source, not the amp. Plan the amplifier and speakers with it, or you'll have Bluetooth with nothing behind it. Want satellite radio too? The SiriusXM SXV300V1 tuner is in this collection.
Riding in the rain? Roadie splash covers protect the radio face on Harley fairing radios.
More Motorcycle Radios Questions
Will a Harley fairing radio fit my Road King?
No. Road King has no fairing, so fairing radios like the PMX-HD14 or the Diamond Audio 7 inch head unit have nowhere to mount. Look at weatherproof Bluetooth streamers and controllers instead.
Can I keep the factory screen on a 2024-Present Harley and add CarPlay or Android Auto?
Yes. Soundz makes a 2024-Present wireless CarPlay adapter and the HS-5522 wireless Android Auto interface for the factory Skyline OS system.
Do I need a new radio to make my 2014-2023 Harley louder?
Not always. On 2014-2023 bikes an amplifier can take its signal from the factory radio through a T-harness, such as the Cicada HDTSLINKAR-B. The new radio is for features; the amp and speakers are what make it louder.