2014–2024 Harley Ultra Limited & Electra Glide Audio Upgrade Guide

July 9, 2026

Model Guide · 2014-2024 Ultra Limited & Electra Glide

Upgrading the audio on a 2014-2024 Harley-Davidson Ultra Limited or Electra Glide starts with identifying the exact model, Boom! Box radio, factory amplifier and speaker zones. Ultra models run a factory four-speaker system (front fairing plus rear Tour-Pak), the Electra Glide Revival is a two-speaker bike, and the Electra Glide Standard was sold without factory audio at all. This guide covers fairing and Tour-Pak speaker fitment, CarPlay and Android Auto options, lower-fairing speakers, radio flashing, amplifiers, DSP integration and complete upgrade paths, tuned for rider-only or two-up riding.

Important model note: This guide covers the previous-generation Batwing Touring platform used by 2014-2024 Ultra Limited and related Electra Glide models. The 2024 Ultra Limited retained the Boom! Box GTS and four-speaker architecture while the 2024 Street Glide and Road Glide moved to Skyline OS. It should not be confused with the 2025 Street Glide Ultra, which uses the redesigned Skyline OS platform, a factory amplifier and two 5.25-inch fairing speakers, and is covered by the Skyline OS Touring guide. The 2023 Electra Glide Highway King is also not covered here: despite the Electra Glide name, it does not use this Batwing four-speaker audio configuration.

Quick answer

Ultra Classic and Ultra Limited models run two speaker zones, the Batwing fairing up front and the Tour-Pak at the rear, as a factory four-speaker system. Standard Ultra systems use 5.25-inch factory speakers in both positions, with purpose-built 6.5-inch direct-fit upgrades available; CVO Limited systems are factory-amplified and use 6.5-inch speakers. The Electra Glide Standard was sold without a factory radio or sound system. The best upgrade depends on your radio (Boom! Box 6.5GT or GTS), whether a factory amplifier is fitted, and whether you tune for rider-only or two-up riding. Only the GTS offers factory CarPlay and Android Auto (wired); 6.5GT bikes get them through an aftermarket head unit, which retains the rear passenger controls.

Jump to: Which system do I have · Electra Glide Standard · Boom! Box radio · Speaker sizes · CarPlay and Android Auto · Head unit functions · Lower fairings · Speaker-only upgrades · Radio flash · Amplifier and DSP · Rider-only vs two-up · Upgrade paths · FAQs

Which Ultra or Electra Glide Audio System Do I Have?

These models share the Batwing fairing but differ significantly underneath, particularly in whether a factory radio, a Tour-Pak rear zone and a factory amplifier are fitted. Before selecting parts, identify the exact model, the radio (Boom! Box 6.5GT, GTS, or none), whether a separate factory amplifier is fitted, which speaker zones are fitted and whether the radio has previously been flashed or the audio system modified.

Model	Relevant years	Factory audio starting point	What to verify
Electra Glide Ultra Classic (FLHTCU)	2014-2019	Four-speaker Boom! Box system: fairing plus Tour-Pak	Radio (6.5GT, or GTS optional in 2019), speaker impedance, rear controls and wiring
Electra Glide Ultra Classic Low	2015-2016	Four-speaker Boom! Box system	As Ultra Classic
Ultra Limited (FLHTK)	2014-2024	Four-speaker Boom! Box system; 6.5GT (2014-2018) or GTS (2019-2024)	Fairing and Tour-Pak speaker impedance, factory or accessory amp, rear controls and wiring; 2024 part fitment confirmed individually
Ultra Limited Low	2015-2019	Four-speaker Boom! Box system	As Ultra Limited
Electra Glide Standard (FLHT)	2019-2022	No factory infotainment or audio; previous owners may have added a radio and speakers	Inner-fairing configuration, speaker pods, handlebar controls, wiring, antenna and any aftermarket equipment
Electra Glide Revival	2021	Boom! Box GTS and two fairing speakers; no factory Tour-Pak rear zone	Radio, speaker impedance and any later modifications
CVO Limited (FLHTKSE)	2014-2021	Factory-amplified premium audio system with fairing and Tour-Pak speakers	Factory amp, impedance, bi-amplified or model-specific wiring and CVO-specific integration
Previously modified bike	Any	Any combination	Every speaker, amp, wire and existing tune

CVO wiring note

The CVO Limited uses a factory-amplified premium audio system with fairing and Tour-Pak speakers. Speaker impedance, amplifier type and wiring vary by year, and some systems use model-specific crossovers or bi-amplified speaker wiring, so it should not be treated as a standard Ultra with better speakers. Do not replace the speakers as though they were conventional two-wire full-range positions until the factory amplifier channels and wiring have been confirmed. From 2022 Harley offered the CVO Road Glide Limited instead, which belongs under Road Glide fitment.

Does the Electra Glide Standard Have Factory Audio?

No. The Electra Glide Standard, offered from 2019 to 2022, was sold with the infotainment system deleted. That makes it a different starting point from an Ultra Classic or Ultra Limited: instead of integrating with an existing Boom! Box and four-speaker system, the build may require a head unit, handlebar audio controls, antenna, wiring and fairing speakers to be added. Because many used Electra Glide Standards have since been modified, inspect the existing inner fairing, wiring and controls before selecting parts.

Which Boom! Box Radio Is Fitted?

Confirm the equipment actually fitted rather than relying on year alone. Radios may have been upgraded, replaced or reflashed during the bike's life, and CVO wiring should never be assumed to match a standard Ultra. The radio configuration depends heavily on the exact model:

2014-2018 Ultra Classic and Ultra Limited: Boom! Box 6.5GT touchscreen.
2019 Ultra Classic: confirm the actual radio; the GTS was offered as a factory option rather than standard.
2019-2024 Ultra Limited: Boom! Box GTS, standard.
2019-2022 Electra Glide Standard: no factory radio; any radio fitted is an accessory or aftermarket installation.
2021 Electra Glide Revival: Boom! Box GTS.
CVO Limited: premium Boom! Box configuration with separate amplification and model-specific wiring.

Any EQ, filtering, clipping or volume-dependent behaviour should be measured rather than assumed.

Fairing and Tour-Pak Speaker Sizes

Batwing Fairing (Front)

Standard Ultra Classic and Ultra Limited systems use 5.25-inch (133 mm) factory drivers in the fairing speaker assembly. Purpose-built 6.5-inch (165 mm) upgrade packages are available for the Batwing fairing and install without cutting when the correct mounting components, terminals and grilles are used. A generic 6.5-inch car speaker is not automatically compatible: confirm basket diameter, mounting pattern, magnet depth, terminal clearance, impedance and grille fitment. CVO Limited and previously upgraded systems may already use 6.5-inch speakers, so confirm what is fitted before ordering.

Tour-Pak Speakers

Standard 2014-2024 Ultra Classic and Ultra Limited Tour-Pak pods use 5.25-inch factory speakers. Purpose-built 6.5-inch replacements are available for these rear pods, but depth, terminals, grille clearance and impedance must still be confirmed. CVO Limited systems use 6.5-inch factory speakers with different amplification and wiring, so they should be checked separately. Larger custom speaker sizes require purpose-built enclosures or significant modification and should be assessed as a custom installation rather than a routine speaker replacement.

Speaker size is only one part of compatibility; impedance and the radio or amplifier driving the speaker matter as much. For factory speaker sizes across every Harley Touring era, see: What Size Speakers Does My Harley Have? Factory Speaker Sizes by Year and Model.

Apple CarPlay and Android Auto on Ultra Limited Models

The Boom! Box 6.5GT does not provide factory Apple CarPlay or Android Auto. A compatible aftermarket Batwing head unit can add CarPlay, Android Auto, Bluetooth and RCA outputs while retaining the factory fairing installation and the rear passenger controls.

The Boom! Box GTS supports wired Apple CarPlay and wired Android Auto with the correct software, USB connection, projection-mode setup and compatible headset configuration; Android Auto was added to existing GTS radios by software update, so an older GTS may need updating first. Riders wanting wireless projection or modern audio outputs may still prefer an aftermarket head unit. See Stock Harley Radio vs Aftermarket Head Units, the SoundStream Reserve V2 vs WHD14+ comparison, and the CarPlay and Android Auto reference guides.

What Factory Functions Will a New Head Unit Retain?

Ultra and Tour-Pak-equipped models use handlebar audio controls, rear passenger audio controls and, on equipped bikes, wired headset connections, rider/passenger intercom and CB. With the correct integration harness, an aftermarket head unit retains the handlebar controls and the rear passenger controls, so the passenger keeps volume and track control from the Tour-Pak position.

What varies between head units and integration packages is support for the factory wired headsets, the rider/passenger intercom and CB functions. If you rely on any of those, confirm them for the specific head unit before replacing the Boom! Box. On CVO Limited bikes, factory amplifier retention or bypass also has to be decided separately from the head-unit choice.

Can I Add Lower-Fairing Speakers to an Ultra Limited?

Lower-fairing speakers may be possible on some Electra Glide and Ultra configurations, but the exact lower-fairing design must be checked. Twin-Cooled Ultra Limited and CVO Limited models use the fairing lowers for cooling-system components, so they cannot be treated like empty vented accessory lowers with conventional glove-box speaker pods. On compatible oil-cooled models or bikes with suitable accessory lowers, speaker pods from the lower fairing audio collection can add another front speaker pair. They require wiring, sufficient amplifier channels and appropriate crossover and level configuration.

What a Speaker-Only Upgrade Can and Cannot Change

A well-matched speaker upgrade can improve clarity, weather resistance and usable output, particularly where the factory speakers have deteriorated. A carefully matched speaker-only upgrade can still be worthwhile where the rider wants better clarity without rebuilding the whole system. It will not add amplifier headroom or independent front/rear tuning, but it can remain the first step in a later amplified build.

What it cannot do is correct an unsuitable source configuration or give you deeper independent control of the front and rear zones, which is why many Ultra owners report the system sounds louder after a speaker upgrade but not necessarily cleaner or better balanced. The factory Boom! Box provides basic front/rear fade and, on equipped models, passenger controls, but the four speakers still operate as a linked factory system without the independent crossover, equalisation, channel routing and delay adjustment a multi-channel DSP or DSP amplifier provides. Riders seeking sustained, balanced output across both zones usually benefit from addressing the source integration, available power and per-zone control as part of the same build.

Learn when a Harley radio flash, line leveller or DSP input correction is the right solution.

Does My Ultra Need a Radio Flash?

A radio flash may be used to reconfigure the Boom! Box output for a different factory-style speaker or amplifier package. Other builds retain the existing radio configuration and use a Harley-specific integration device or DSP input correction instead. The correct approach depends on the radio, current flash, factory amplifier, speaker layout and equipment being installed. A flash is not automatically the complete solution: the source output should still be tested for usable frequency response and maximum clean volume.

Amplifier and DSP Integration

The factory signal can be measured and then conditioned using a suitable DSP, DSP amplifier or Harley-specific integration device. Beyond the factory front/rear fade, a processor with enough channels lets the front fairing and rear Tour-Pak be tuned separately, with independent per-zone level, equalisation, crossover control, channel routing and time alignment, and a processor with suitable OEM-input correction may compensate for measured factory EQ. This depth of control becomes most useful in an amplified system where the two speaker zones need to be tuned independently; a conventional four-channel amplifier can also run the front and rear speakers on separate channels without a DSP, with less control.

A DSP cannot repair a source signal that is already clipping, restore dynamics removed by source-level compression or change a speaker's physical direction. The radio's maximum clean volume and usable response must be established during setup. Once configured, the settings remain stored and provide a repeatable baseline. A successful Ultra Limited upgrade starts by treating the fairing and Tour-Pak as related but separately tunable speaker zones.

DSP Tuning for Harley Baggers (Explained Simply)

Rider-Only Versus Two-Up Tuning

The rider and passenger occupy different listening positions. The rider sits closer to the fairing speakers, while the Tour-Pak speakers sit beside or slightly behind the passenger. Independent levels, crossovers and EQ help balance the front and rear zones. Time alignment can then be configured for a chosen listening priority, typically the rider, or set as a compromise for two-up use. One fixed delay setting cannot perfectly align both seating positions at the same time. For rider-only use, the rear level can be reduced and time alignment referenced primarily to the rider; for regular two-up riding, a more even front/rear balance and a less aggressive timing strategy may produce a better compromise. DSPs that support multiple presets are especially useful here: one preset can prioritise the rider and another can be configured for two-up touring.

Ultra and Electra Glide Upgrade Paths

Choose the path that best matches your bike and how you use it.

Path 1: Front Fairing Improvement

Confirmed direct-fit 6.5-inch fairing speakers with the existing radio and amplifier configuration checked. Suitable for riders who want a modest, clean front-stage improvement without a larger build.

Path 2: Amplified Front Stage

6.5-inch fairing speakers with an external amplifier or DSP amplifier, correct radio integration (flash or input correction) and a proper gain and crossover setup, for clean, controlled front output at touring speed.

Path 3: Add or Upgrade the Rear Tour-Pak Zone

Matched Tour-Pak speakers running on their own amplifier channels, with front and rear gain and crossover settings configured separately. A DSP or DSP amplifier is recommended where independent EQ, routing, timing or multiple rider/two-up presets are required. Matching the Tour-Pak speakers to the fairing in sensitivity and tone matters for two-up riding. Complete four-speaker systems are available: 2014-2023 Street Glide & Ultra complete audio systems.

Path 4: Full Multi-Zone System

Fairing, Tour-Pak, optional lower-fairing and optional saddlebag speakers, sufficient amplifier channels, a DSP for routing, level control, integration and tuning, and an optional aftermarket head unit for CarPlay, Android Auto or clean RCA outputs.

Across every path: identify the model, radio, amplifier and speaker zones before choosing parts (and, on an Electra Glide Standard, what audio is present at all); use confirmed direct-fit fairing speakers and matched Tour-Pak speakers; integrate the source correctly; provide enough clean power for the chosen speakers and zones; and set gain structure, crossovers and, where multiple zones are used, time alignment for your chosen listening priority. The multi-zone layout rewards proper front and rear integration and exposes shortcuts.

Frequently Asked Questions

Does an Electra Glide Standard have a factory radio or speakers?

No. The 2019-2022 Electra Glide Standard was sold without a factory infotainment or sound system. Any radio or speakers fitted to a used bike are accessory or aftermarket additions, so inspect the inner fairing, wiring, controls and antenna before selecting parts.

Which Boom! Box radio does my Ultra have?

2014-2018 Ultra Classic and Ultra Limited models have the Boom! Box 6.5GT touchscreen, and 2019-2024 Ultra Limited models have the GTS as standard. On a 2019 Ultra Classic the GTS was a factory option, so confirm which is fitted. CVO Limited uses a premium configuration. Radios may have been upgraded or replaced during the bike's life, so confirm the radio actually fitted.

Can I add Apple CarPlay or Android Auto to my Ultra Limited?

A 6.5GT bike has no factory projection; an aftermarket Batwing head unit adds CarPlay and Android Auto. The Boom! Box GTS supports wired CarPlay and wired Android Auto with current software, projection mode enabled and a compatible headset paired. Wireless projection means an aftermarket head unit on this platform.

Will a new head unit keep my Ultra's passenger controls and intercom?

The rear passenger controls are retained with the correct integration harness, along with the handlebar controls. Support for the factory wired headsets, rider/passenger intercom and CB varies by head unit and integration package, so confirm those specific functions before selecting the radio if you rely on them.

What size speakers are in a 2014-2024 Ultra Limited?

Standard systems use 5.25-inch factory speakers in the fairing and Tour-Pak, with purpose-built 6.5-inch direct-fit upgrade packages available for both positions. CVO Limited systems use 6.5-inch factory speakers with factory amplification. Confirm the actual speakers, mounts and grilles before ordering.

What size are the Tour-Pak speakers?

On standard 2014-2024 Ultra and Limited models the Tour-Pak pods use 5.25-inch factory speakers, with 6.5-inch direct-fit replacements available. CVO Limited uses 6.5-inch factory speakers. Larger sizes require purpose-built enclosures or significant modification.

Can I add lower-fairing speakers to an Ultra Limited?

Only on compatible lowers. Twin-Cooled Ultra Limited and CVO Limited models use the fairing lowers for cooling-system components, so generic glove-box speaker pods do not apply. Oil-cooled models or bikes with suitable accessory lowers can take speaker pods, with wiring, amplifier channels and crossover configuration to suit.

Does the Boom! Box have a front/rear fade control?

Yes. The factory Boom! Box provides a front/rear fade adjustment, and equipped Ultra models include passenger controls. What it does not provide is independent per-zone EQ, crossovers, channel routing and time alignment, which is what a DSP or DSP amplifier adds.

Do I need a DSP to control the front and rear speakers separately?

Not for basic balance: the Boom! Box provides a front/rear fade control, and a conventional four-channel amplifier can run the front and rear pairs on separate channels with their own gain and crossover settings. A DSP or DSP amplifier adds deeper control, including separate EQ, routing, time alignment and rider/two-up presets, and becomes most useful in an amplified system where the two zones need to be tuned independently.

Can I tune my Ultra differently for solo and two-up riding?

Yes, with a DSP that supports multiple presets: one preset can prioritise the rider and another can be configured for two-up touring. A single fixed time-alignment setting cannot perfectly optimise the rider and passenger positions at the same time, so presets or a sensible compromise are the practical approach.

Does my Ultra Limited have a factory amplifier?

Standard Ultra Classic and Ultra Limited models run from the radio's internal amplification unless a factory-accessory or aftermarket amplifier has been added. CVO Limited configurations include a separate factory amplifier. Trace the speaker wiring and check for a separate amp rather than assuming from the model badge.

Will 2014-2023 Ultra audio parts fit a 2024 Ultra Limited?

The 2024 Ultra Limited retained the previous-generation Batwing fairing and Boom! Box GTS architecture, unlike the redesigned 2024 Street Glide and Road Glide, so it belongs in this guide. Shared architecture does not guarantee identical part fitment, wiring or software requirements, so confirm every speaker, amplifier, harness, mounting kit and head unit specifically for the 2024 Ultra Limited before ordering.

Are CVO Limited audio systems different?

Yes. 2014-2021 CVO Limited models use factory amplification and 6.5-inch Boom! Audio speakers, sometimes with bi-amplified or model-specific wiring, which changes impedance and integration. Identify the exact system and confirm the amplifier channels and wiring before choosing parts.

Shop Ultra & Electra Glide audio

Upgrading a 2014-2024 Ultra or Tour-Pak-equipped Electra Glide? Shop front fairing, Tour-Pak rear-stage and amplifier options, and confirm the factory audio package. These collections are organised for 2014-2023; 2024 Ultra Limited fitment is confirmed product by product.

Have a CVO Limited, Electra Glide Standard or previously modified bike? Contact Motorcycle Audio Australia with the year, exact model, radio, amplifier and current speaker locations so we can verify the radio, wiring and amplifier requirements.

Plan your Ultra audio system

Riding one of these? Tell the System Builder your model and year and it will match the whole system, from fairing and Tour-Pak speakers to amplification, wiring, mounting and Boom! Box integration, and price it. The 2019-2022 Electra Glide Standard starts as a custom build, because its system is planned from the empty fairing up.

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