23.5+ Harley Touring Audio Systems Explained: New Radio, Rockford Amp, and Upgrade Paths

02/11/26

23.5+ Harley Touring Audio Systems Explained: New Radio, Rockford Amp, and Upgrade Paths

The 2023.5 CVO run introduced Harley’s new touring audio platform. From 2024 to current Road Glide and Street Glide models, that same new radio system is paired with a factory Rockford Fosgate amplifier. That factory amp changes how upgrades behave compared to previous years—and it’s why the “right” upgrade path depends on whether you keep or remove the stock amplifier.

Quick Answer

  • You do NOT need an A2B module just to add an aftermarket amplifier.
  • If your goal is the best sound quality and maximum control, the best route is removing the stock amp using an A2B module.

What Changed on 23.5+ (and Why It Matters)

On 23.5+ bikes, you’re dealing with a new system architecture that includes the factory Rockford Fosgate amp. That matters because it influences signal quality, tuning behavior, and how cleanly you can integrate aftermarket amplification.

The Two Correct Upgrade Lanes

Lane A: Keep the Stock Rockford Amp + Add a Second Amp (Fastest Path)

This is the quickest way to get more output and improve overall performance while keeping the factory amp in place. The important reality: this route still uses a processed signal (it is not a flat curve like you get when the stock amp is removed and an A2B module is added).

Recommended solution for this lane:

Lane B: Remove the Stock Rockford Amp + A2B Module (Best Overall Sound)

If you want the best sound, best tuning control, and the cleanest integration path, removing the stock amp and running the correct A2B solution is the route that delivers. This is where you get the cleanest signal path compared to retaining the factory amp.

A2B module options we carry:

Which Lane Should You Choose?

  • Choose Lane A if you want a clean, plug-and-play upgrade path, you’re keeping the stock amp, and you want to add amplification without fully reworking the system.
  • Choose Lane B if you want the best sound quality possible and the most control over the system.

Common Mistake on 23.5+ Bikes

The most common failure point is treating 23.5+ like earlier touring years. The new platform changes the signal and integration strategy—so your results depend heavily on choosing the correct lane and building around it.

Need Help Picking the Right Path?

If you want the fastest way to get this right the first time, start with your goal (louder, cleaner, or bass) and build the system around the correct integration lane.

This Blog Was Reviewed for Accuracy By Audio Expert, Chris Lowe

Chris Lowe, the esteemed owner of Garage Bagger Stereo, is a globally recognized authority in Motorcycle and Boat Audio systems. With a decorated experience spanning over a decade, Chris has curated audio experiences for enthusiasts and businesses worldwide. His expertise and stellar work are prominently showcased across various social media platforms and can be further explored through the offerings on the official Garage Bagger Stereo website.

Originally hailing from South Georgia and currently residing in Greenville, South Carolina, Chris's fervor for boating and motorcycles is deeply rooted. It's this passion, coupled with his affection for car audio, that has seamlessly interwoven his personal interests with his professional pursuits. This synergy has not only invigorated his daily endeavors but also continually fuels his commitment to excellence in the audio industry.

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