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RoadMaster BrakeMaster Custom Seat Adapter

RoadMaster BrakeMaster Custom Seat Adapter

Item # RM-88339
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Our Price: $60.03
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Shipping Weight: 3 lbs
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Easily mount your new BrakeMaster supplemental braking system with this custom seat adapter. Bracket remains hidden beneath your vehicle's seat when not in use. 1-833-496-1390 to order Roadmaster accessories and parts part number RM-88339 or order online at Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for RoadMaster BrakeMaster Custom Seat Adapter. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (3)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Roadmaster Accessories and Parts - RM-88339

  • Tow Bar Braking Systems
  • Seat Adapter
  • Roadmaster

Easily mount your new BrakeMaster supplemental braking system with this custom seat adapter. Bracket remains hidden beneath your vehicle's seat when not in use.


  • Simplifies installation and ensures proper positioning of supplemental braking system in towed car
  • Lets you go from towing to driving in under a minute - brake system can be removed quickly and easily
  • Remains hidden beneath the seat when not in use - no need to remove and store
  • Contours to the floor for a tight, customized fit
  • Made in the USA
  • Limited Lifetime Warranty

88339 Road Master Brake Master Seat Adapter

Installation Details RM-88339 Installation instructions

This Product Fits The Following Vehicles

Video of RoadMaster BrakeMaster Custom Seat Adapter

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Roadmaster Tow Bar Braking System Seat Adaptor - RM-88339

Michael: Hi there, I'm Michael with Today we're going to take a quick look at the Roadmaster BrakeMaster Custom Seat Adapter. This is a custom fit for your 2019 and newer Chevrolet Equinox. Basically the way this works, it's going to mount to the front, hold down points of your driver's seat. It's going to create a direct connection for your BrakeMaster system so it's going to be much easier to get that BrakeMaster system installed and to make sure that it is aligned properly so that it will push on that brake pedal correctly. This bracket is going to be a permanent installation, so you're not going to have to put it in and take it out every time you're wanting to get your BrakeMaster set up.

It is low profile so it's going to remain hidden beneath the seat when you're not using it. You're not even going to know it's there. But then when you do need to hook up to your BrakeMaster system, it's going to be there for you to hook up to.This is a very high quality metal so it's going to hold up and do a good job for you. They do include all the hardware that you're going to need to get your BrakeMaster system hooked up to this. This does conform to the floor of your Equinox so that's why it's a custom fit.

It is designed to work with your Equinox specifically so that you're not going to have any parts sticking out that could cause problems for you. It's going to go along with your vehicle. So if you're needing a way to attach your BrakeMaster system to your Equinox, this is going to be the piece that you need. It's going to do a good job for you to make sure that everything is working properly, and it's going to make it much easier to get your system set up so that you can get onto the road sooner and get to your campsite or wherever it is that you're going much faster and easier.That's going to complete our look for today. Again, I'm Michael with

Thanks for watching.

Customer Reviews

RoadMaster BrakeMaster Custom Seat Adapter - RM-88339

Average Customer Rating:  5.0 out of 5 stars   (3 Customer Reviews)

Easily mount your new BrakeMaster supplemental braking system with this custom seat adapter. Bracket remains hidden beneath your vehicle's seat when not in use.


Very easy to install. Looks to be very sturdy and should work as designed. Just installed yesterday, 01/28/21, and have not been able to test it as of yet,

Works as it should
Henchman - 01/30/2022


Fit perfectly



See what our Experts say about this Roadmaster Accessories and Parts

  • Can Rest of the Parts Be Obtained for the Roadmaster BrakeMaster If You Only Have Air Cylinder
    If you only have the Roadmaster BrakeMaster Air Cylinder part # RM-9100-50 (With Brake Pedal Clamp) then you'd need the Replacement Cord part # RM-921004, Second Vehicle Kit with Breakaway part # RM-98160, and Second Vehicle Kit for Air Brakes part # RM-98200. This would end up being around the same cost as the Roadmaster BrakeMaster System part # RM-9160 so that's up to you. Please note, in order to use the Roadmaster BrakeMaster System on a 2019 Chevrolet Equinox you'll need both the...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B
Employee Isabelle B
Updated by:
Isabelle B

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