The Plex XL to ST Upgrade is a motorcycle audio system upgrade service designed to convert existing Plex XL systems to the newer ST platform. This Plex XL to ST upgrade improves fitment, system design, and overall performance without requiring a full system replacement.
 
This motorcycle audio upgrade conversion allows riders to retain key components such as amplifiers and speakers while upgrading the enclosure, mounting system, and supporting hardware. It provides a streamlined path to improved system integration and functionality.
 
As a Harley audio system upgrade solution, it is ideal for riders looking to modernize their setup while maintaining compatibility with existing Plex Audio components.
 
The Plex XL to ST Upgrade is designed for riders looking to enhance their existing audio setup with improved performance and sound quality. This upgrade allows for a smoother transition between system configurations while maintaining the high standards associated with Plex Audio products.
 
Built with compatibility and performance in mind, this upgrade supports riders who want to get more out of their current setup without a full system replacement. It’s an ideal solution for those already using Plex Audio components and looking to take their system to the next level.
 
Whether you're upgrading for better clarity, increased output, or overall system performance, the Plex XL to ST Upgrade provides a reliable and effective path forward.
 
PLEASE READ INSTRUCTIONS CAREFULLY.
 
This deal is strictly for people that already have a Plex XL system and would like to swap over to the new Plex ST shell and bracket system. 
 
You will need to send in your XL unit using either the prepaid ups label option which includes the label to ship back to us and one for us to ship back to you or use whatever carrier you choose but please make sure to include a return label. Only ship the unit itself, do not remove the power wire from your bike. 
 
We will use the amplifier and speakers that are in your XL unit but will replace all other parts and wires into the new ST system. 
 
If you want us to upgrade you to the new PRO speakers you could choose that option as well on one of the drop down menus. If you do decide to go that route we will send you back your original speakers for you to keep. 
 
Your warranty on the amplifier and original speakers does not restart since those are tied to Rockford by serial number but everything else will have a new 1 year warranty on it. If you opt for the upgraded speakers those will also have a new warranty on them which Rockford allows 2 years on. 
 
If you are creating your own labels the address to send them back to is:
Plex Audio
Attn: Upgrade
8489 Westfield Rd
Seville OH 44273