Can Demco Stay In Play DUO Be Used on Motorhome with Air Brakes
Updated 10/30/2025 | Published 10/13/2025
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Question:
Will this work with a RV with Air Brakes also? SM99251
asked by: Julian H
Expert Reply:
Hey Julian, technically yes the Demco DUO part # SM99251 will work with an RV that has air brakes but the reason it's not recommended is because of exhaust brakes that are in MHs that have air brakes. By law when you use an exhaust brake the brake lights of the motorhome have to come on which would activate the DUO and what ends up happening is that the brakes on the towed vehicle end up getting fried.
We have a similar option made for tow vehicles with air brakes with the Demco Air Force One part # DM26VR. This ties into the motorhome's air brake system and applies the towed vehicle brakes in a proportional manner. Would that be something you'd be interested in?
Product Page this Question was Asked From
Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional
- Flat Tow Brake System
- Brake Systems
- Proportional System
- One-Time Setup
- Vehicle Battery
- Fixed System
- Power Assist Brake Compatible
- Hydraulic Brakes
- Indicator Lights
- Demco
more information >
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on Flat Tow Brake System
Jameson C.
10/30/2025
Hey Julian, did you end up going with the Demco Air Force One system for your RV with air brakes? Knowing how it performed could help others decide between the two setups. Your feedback would be great for anyone towing with a similar motorhome.