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Roadmaster BrakeMaster Custom Seat Adapter
Roadmaster

Roadmaster BrakeMaster Custom Seat Adapter

Part Number: RM-88315
In Stock
$70.82
Retail:$88.89
You Save: 20%
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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. 1-800-940-8924 to order Roadmaster accessories and parts part number RM-88315 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster BrakeMaster Custom Seat Adapter. Accessories and Parts reviews from real customers.
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  • Reviews (270)
  • Q & A (0)
  • Videos (1)
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Roadmaster Accessories and Parts - RM-88315

  • Flat Tow Brake System
  • 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.


Features:

  • Custom seat adapter simplifies installation and ensures proper positioning of supplemental braking system in towed car
    • Works with Roadmaster BrakeMaster systems
  • 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 your floor for a tight, custom fit
  • Made in the USA
  • Limited Lifetime Warranty


88315 Road Master Brake Master Seat Adaptor

Installation Details RM-88315 Installation instructions

This Product Fits The Following Vehicles




Video of Roadmaster BrakeMaster Custom Seat Adapter
Video Thumbnail Video Player Dialog

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




Video Transcript for Review of the RoadMaster BrakeMaster Custom Seat Adapter

Today we're going to be taking a look at RoadMaster's line of custom seat adapters for the BrakeMaster braking system. You'll want to use our fit guide to determine the appropriate seat adapter for your vehicle.This custom seat adapter provides an anchor point for your BrakeMaster supplemental braking system. The BrakeMaster cylinder extends, pressing your brake pedal, and it needs something else to push against. This provides an anchor point for it to push against. As every vehicle is different, RoadMaster has a complete line of custom-fit brackets to ease the installation of your BrakeMaster system.The included hardware will allow you to easily attach the bracket to the base of your seat. The anchor point here at the center of your bracket is going to give you an attachment point for your BrakeMaster system.

It'll allow it to pivot, to make it easy to get the proper adjustment for your cylinder to your brake pedal. The custom bracket remains hidden, so when not in use you won't even know it's there.Our customer Chuck M. had to say, "The RoadMaster seat mounting plate for the breakaway system is a must. I do not recommend using the plate that requires drilling into the floor when you can use this adapter and save time. It does not get in the way when not in use.

Again, thanks for providing a great product."And that's a good point, Chuck. Compared on the plate that requires drilling into the floor, these custom adapters don't require you to modify the vehicle, and provide a nice solid anchor point.And that completes our look at RoadMaster's line of custom seat adapters for the BrakeMaster braking system.

Customer Satisfaction Score:

Ratings & Reviews

4.8

270 reviews
5 Stars
(230)
4 Stars
(24)
3 Stars
(10)
2 Stars
(1)
1 Star
(5)
Review Sort Icon
by:
Great customer service!
Robert profile picture

Robert

5/4/2021

Works Great

by:
Works great needs better instructions.
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It worked great service was good to
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Easy order. Fast delivery. Rigging up a toad. Pictures to come.......... Maybe.
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Tracking was difficult, no notifications. Then to find out there was duties to be paid. I was not impressed.
There is no torque specs on the installation guide. Oh well I will have to figure something out.
Mike L. profile picture
Etrailer Expert

Mike L.

4/30/2026

I spoke with Roadmaster regarding the torque spec of that bolt, I'm told it's 53 foot lbs. Hope that helps!

by:
Should include break mounting post
by:
I bought this part because I had an air operated cylinder from my last jeep.
by:
Easy to install - just follow instructions that are included - as you can see fits great - priced right
Dennis B. profile picture

Dennis B.

8/3/2017

Great

by:
This is a must have as I was transferring my breaking system from a jeep to a Ford F150. The roadmaster system works so well.
by:
Works like it should, had no problems installing
by:
I purchased this seat adapter for the RoadMaster air brake system for my 2014 F150. The seat adapter is required for proper positioning of the air brake cylinder. The etrailer web site was helpful in identifying the correct part number and this part was delivered to my home quickly. I have not yet installed the seat adapter but the instructions seem straight forward.
Steven H. profile picture

Steven H.

8/5/2016

I am pleased with the Roadmaster products and have had no problems during the past year.

by:
Fit my 2017 Wrangler perfectly
by:
The RM-88291 seat mounting plate for the breakaway system is a must. I do not recommend using the plate that requires drilling into the floor when you can use this adapter and save time. And it does not get in the way when not in use. Again, thanks for providing a great product.
Chuck M. profile picture

Chuck M.

1/15/2018

Perfect

by:
Exactly as advertised. Installation was easy and only took a few minutes
by:
I tried two months ago complaining about the rust on my new system after one year of ownership and I live in a dry climate and I purchased the jacket (which I use) was quickly emailed by Clayton O of etrailer asking for pictures. I sent Clayton O numerous pictures.
I have emailed etrailer Clayton O since then (due to no reply) and he says nothing.
I’ve spent my hard earned money occasionally at etrailer when the need arises. One time I have disappointment, they appear to reach out, then nothing, thanks to Clayton O.
Sierra K. profile picture
Etrailer Expert

Sierra K.

10/1/2021

Clayton O. no longer works at etrailer.com. I can help with whatever issue you are having. Unfortunately, rust is a wear and tear issue that is not covered by warranty. Here is a help article with tips to prevent further rust:

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Thank you very much
by:
My shipment was complete, thanks etrailer for the fast shipping and good service .
Thanks also to Hally C for the fast treatment and cordial response to my demands .

Thanks again etrailer.

Norman profile picture

Norman

4/2/2020

The product is great and price in right

by:
Fit was perfect when I finally got the right one, the wrong one that was shipped finally got a return authorization after several emails was sent and way to much time to get a return it has been shipped back as of yesterday. Now have to see if they credit my card back for there mistake. If so all is well if not be very careful when you talk to these folks that they get you the right part for the vehicle information you give them.
by:
Your customer service leaves nothing lacking, and this follow-up from you is so out of character for the many web sites I have purchased from over the years. I am impressed by you and your company.

I bought the tow bar and the brake system for my Equinox, and installed them my self (I am 70 years old) - and with your provided instructions and video, I had no problems (even though I was surprised by the number of parts and detail that went into the assemblies).

Both systems have worked very well, with no problems. I am completely satisfied with them, and have told my friends and traveling acquaintances about your company.

Thanks for your follow-up!
by:
Roadmaster was real slow with the delivery of the seat adapter. But Michael kept me informed all the way through to the delivery. etrailer is 5 stars all the way from start to finish. I look forward to using them in my orders to follow.
Now for ROADMASTER products
RM-643 safety cables quality is good work fine Delivery was fast
RM-9160 brake master system Love this system instructions were easy to follow
RM-15267 toad tail light/brake wiring good instructions for install
RM-1550-1 base plate good instructions for install except you need to drill two 1/2'' holes you must measure and mark as there is no pilot hole.
The whole system works great with the 2008 Honda Pilot
RM-88189 seat adapter I have yet to install as I had to make up my own for the trip.
I will say the seat adapter bracket is made just for the Honda and Acura, they had to make custom make. Thanks to all the car towed great for my first trip of 1,100 miles
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See what our Experts say about this Roadmaster Accessories and Parts

  • How Does the Roadmaster Seat Adapter # RM88315 Install
    To see how the Roadmaster Seat Adapter # RM88315 installs check out the installation instructions link I attached. Basically it attaches to the seat install hardware you have on your seat already.
    view full answer...
  • Is A Brake Pressure Reducer Needed On A 2017 GMC Canyon?
    No, the RoadMaster Brake Pressure Reducer for BrakeMaster Supplemental Braking System # RM-900002 is not needed for your 2017 GMC Canyon. The brake pressure reducer is needed for vehicles that have active, or continuous power assist systems that are present on Hummer's or Hybrid's. With the Roadmaster BrakeMaster # RM-9160, you will also need a Roadmaster Stop Light Switch Kit # RM-751472, and the Roadmaster BrakeMaster Custom Seat Adapter # RM-88315
    view full answer...
  • Is Roadmaster Brakemaster Compatible with 2018 Chevy Colorado
    The Roadmaster BrakeMaster part # RM-9160 that you referenced is compatible with the brake style of your 2018 Chevy Colorado. We confirmed this with Roadmaster. They also have a special seat adapter they made for your truck too with the part # RM-88315 that you'll want as well. The BrakeMaster is not compatible with active power assist brakes but since your truck does not have this style of brakes this would not be an issue.
    view full answer...

Do you have a question about this Accessories and Part?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Written by:
Wilson B
Employee David F
Installed by:
David F
Employee Isabelle B
Updated by:
Isabelle B

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