What Brake System To Use With 2021 Newmar Dutch Star With Pre-Installed Air Brake Fitting On Rear
Updated 12/22/2025 | Published 10/22/2024
Products Featured in This Question
Question:
I have a 2021 Newmar Dutch star DSDP 3736 on freightliner chassis with air brake fitting on rear. 2023 jeep JLU 392 toad. Will the Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional system work? What parts will I need for install? Do you have installer in Arizona or can I do my self?
asked by: Brian M
Expert Reply:
Hello Brian, thanks for reaching out. Some RVs including Freightliner do come with the components for the Demco Air Force One brake system pre-installed, and it sounds like this is the air brake fitting you are describing. This can be utilized but not for the Roadmaster BrakeMaster system. It will only work for the Air Force One system and for that all you will need is the following:
- Second Vehicle Kit for Demco Air Force One Flat Tow Brake System # SM99209
The video below will show you an example of installation. Give it a watch and see how you feel. This can be a DIY install if you are familiar with working on cars. If this falls outside your area of expertise then it will best be done by a professional. The link below will show you our installer locator. Just enter your zip code and you will see the full list of installers in your area.
Product Page this Question was Asked From
Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional
- Flat Tow Brake System
- Brake Systems
- Proportional System
- Every-Trip Setup
- Vehicle Battery
- Fixed System
- Not Power Assist Brake Compatible
- Air Brakes
- Air Over Hydraulic Brakes
- Indicator Lights
- Roadmaster
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Second Vehicle Kit for Demco Air Force One Flat Tow Brake System
- Shop: Brake Controller
- Shop: Vehicle Tow Bar Brake System
- Q&A: Recommended Trailer Brake Controller For A 2022 Newmar Kountry Star 4037 Motorhome
- Q&A: Recommended Brake Controller for a 2022 Newmar Super Star RV on a Freightliner M2 Chassis
- Shop: Demco Air Force One Flat Tow Brake System for 2021 and Newer Freightliner Chassis RVs w/ BrakeSync
- Shop: Demco Tow Bar Adapter Brackets for Roadmaster Direct-Connect Base Plates
- Shop: Demco Sentry Deflector Adapter Kit for Roadmaster Base Plates
- Shop: Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Wireless Monitoring - Proportional
- Video: Demco Base Plates DM9523032 Review
- Search Results: demco tow bar adapter
- Search Results: air force one
- Search Results: demco tow bar
- Shop: Towed Car Conversion Kit - Demco Air Force One to Stay-IN-Play Duo Flat Tow Brake System
- Video: Breaking Down the Second Vehicle Kit for Demco Air Force One Flat Tow Brake System
- Search Results: trailer breakaway kit
- Video: Review of Demco Air Force One Coiled BrakeSync Air Jumper Kit - DM97ZR
- Shop: Replacement Male Quick Disconnect for Demco SBS Air Force One Supplemental Braking System
- Search Results: sm99666
- Search Results: brake controller
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer hitch
- Video: How to Choose a Trailer Brake Controller
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Trailer Wiring Diagrams
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Trailer Wiring
- Q&A: Parts Needed to Install a Red Arc Brake Controller in a 2023 Toyota Tacoma
on Flat Tow Brake System
Jesse M.
12/22/2025
Hey Brian, how did things go with the Air Force One setup on your Dutch Star and Jeep? Were you able to use the second vehicle kit to get everything working together? Your update could make it easier for the next person with the same combo.