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Recommended Disc Brake Conversion Kit for a 2021 Alliance 340RL 5th Wheel Trailer  

Updated 03/08/2026 | Published 03/04/2026



Question:

Hello I have a 2021 Alliance 340RL that I would like to switch over to disc brakes. I think this is the kit I need. Can you verify?

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Expert Reply:

Hey Josh. Your 2021 Alliance 340RL has dual 7,000 lbs axles so the DeeMaxx Disc Brake Kit w/ Actuator item # DE66AR is exactly what you'll need. The rotors have inner bearing item # 25580 and outer bearing item # 14125A. They work with 15" to 17-1/2" wheels that have a 8 on 6-1/2" lug nut pattern.

The included actuator requires you to have a brake controller with an EOH setting. What brake controller does your truck have? If it's a factory controller what year, make, and model is your truck? Some of the older ones need an additional adapter.

You can add this information, along with any other questions you have, where it says Add Comment.

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Jerred H
DE66AR
DE66AR
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