2026 Audi A3 Vehicle Tow Bar Brake System

Name: Blue Ox Patriot Portable Flat Tow Brake System - Proportional
Brand: Blue Ox
SKU: BLU37TR
Price: 1479.94 USD
Availability: InStock
Rating: 4.62241887905605 (339 reviews)

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Blue Ox Patriot Portable Flat Tow Brake System - Proportional

339 reviews

Code: BLU37TR

$1,479.94

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Wireless Display
Every-Trip Setup
Built-In Battery
Power Assist Brake Compatible
Portable System
Air Brakes
Air Over Hydraulic Brakes
Hydraulic Brakes

Features:

Small, light, and precise, this portable unit gets you smooth braking with basically no installation. Plugs directly into 12V outlet. Easy to swap between multiple cars. Control and monitor the system remotely from your motorhome with LCD display.

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Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional

719 reviews

Code: SM99251

$1,175.00

Retail:$1,384.00

You Save: $209.00

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Indicator Lights
One-Time Setup
Vehicle Battery
Power Assist Brake Compatible
Fixed System
Hydraulic Brakes

Features:

Plug in and go: this permanent system gets you smooth, reliable braking with a one-and-done installation. Low-profile components designed to stay out of sight.

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Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Proportional

472 reviews

Code: SM99243

$1,329.00

Retail:$1,575.00

You Save: $246.00

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Indicator Lights
One-Time Setup
Vehicle Battery
Power Assist Brake Compatible
Fixed System
Air Brakes

Features:

Get safe, smooth braking for your towed car with this truly proportional braking system. Car slows perfectly in sync with your RV. Installs permanently so you can just plug in and go. Low-profile design keeps it out of sight and out of the way.

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Brake Buddy Classic 3 Portable Flat Tow Brake System - Preset

243 reviews

Code: HM39494

$1,238.61

In Stock

Flat Tow Brake System Specs:

Brake Systems
Pre-Set System
Indicator Lights
Every-Trip Setup
12V Outlet
Power Assist Brake Compatible
Portable System
Air Brakes
Air Over Hydraulic Brakes
Hydraulic Brakes

Features:

This portable unit gets you smooth braking without a complex installation. Senses the RV braking and applies the car's brakes at an intensity preset by you. Easy to swap between multiple cars; settings adjust for smooth braking for any size car.

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Brake Buddy Stealth Supplemental Braking System - Proportional

91 reviews

Code: HM39530

$1,171.35

Retail:$1,599.00

You Save: $427.65

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Wireless Display
One-Time Setup
Vehicle Battery
Power Assist Brake Compatible
Fixed System
Hydraulic Brakes

Features:

Get fully proportional braking with a system that never has to be removed, replaced, or reset. Actuator installs out of sight and remains virtually invisible when your car isn't being towed. Controller also works as a trailer brake controller.

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Roadmaster BrakeMaster for RVs w/ Air or Air-Over-Hydraulic Brakes - Proportional

141 reviews

Code: RM-9160

$920.00

Retail:$1,022.22

You Save: $102.22

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Indicator Lights
Every-Trip Setup
Vehicle Battery
Not Power Assist Brake Compatible
Fixed System
Air Brakes
Air Over Hydraulic Brakes

Features:

Stay on budget with this proportional braking system. More reliable than a portable system, cheaper than a permanent one. Lightweight actuator attaches to brake pedal and front seat and removes for storage. Car brakes perfectly in sync with RV.

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Roadmaster Even Brake Portable Flat Tow Brake System - Proportional

56 reviews

Code: RM-9400

$1,755.00

Retail:$1,951.52

You Save: $196.52

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Wireless Display
Every-Trip Setup
12V Outlet
Not Power Assist Brake Compatible
Portable System
Air Brakes
Air Over Hydraulic Brakes
Hydraulic Brakes

Features:

Portable unit gets you smooth braking without a complex installation. Measures the RV's braking and applies your towed car's brakes with the same intensity, at the same time. Easy to swap between multiple cars. Includes LCD braking monitor.

More Information >

Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Wireless Monitoring - Proportional

472 reviews

Code: DM26VR

$1,525.00

Retail:$1,817.00

You Save: $292.00

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Indicator Lights
One-Time Setup
Vehicle Battery
Power Assist Brake Compatible
Fixed System
Air Brakes

Features:

Get safe, smooth braking for your towed car with this truly proportional braking system. Installs permanently so you can just plug and go. Low-profile design keeps it out of sight and out of the way. Includes convenient wireless braking monitor.

More Information >

Demco Stay-IN-Play Duo Braking System for RVs w/ Hydraulic Brakes - Wireless Monitor - Proportional

719 reviews

Code: DM86VR

$1,349.00

Retail:$1,590.00

You Save: $241.00

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Wireless Display
One-Time Setup
Vehicle Battery
Power Assist Brake Compatible
Fixed System
Hydraulic Brakes

Features:

Plug in and go: this permanent system gets you smooth, reliable braking with a one-and-done installation. Low-profile components stay out of sight. Includes convenient wireless Coachlink.

More Information >

Roadmaster BrakeMaster for RVs w/ Hydraulic Brakes - Proportional

141 reviews

Code: RM-9060

$1,425.00

Retail:$1,579.80

You Save: $154.80

In Stock

Flat Tow Brake System Specs:

Brake Systems
Proportional System
Indicator Lights
Every-Trip Setup
Vehicle Battery
Not Power Assist Brake Compatible
Fixed System
Hydraulic Brakes

Features:

More reliable than a standard portable system, lightweight actuator attaches to brake pedal and driver's seat and removes for storage. Car brakes perfectly in sync with motorhome.

More Information >

Explore Expert Info

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Choosing Between the Brake Buddy Select 3 and the Blue Ox Patriot Supplemental Braking System

When it comes to choosing between the Blue Ox Patriot #BLU37TR and the Brake Buddy Select 3 #HM39524, these systems are extremely similar in their setup and functionality. Both of these systems provide proportional braking in a compact and easy to…

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Does the Curt Base Plate Kit Work w/ the Ford Modular Bumper on a 2025 Ford Bronco Everglade?

Yes, it does John. So long as you have the Ford Performance Heavy Duty Modular Front Bumper with the tow hooks, the easiest way to flat tow it is to use the Curt Custom Base Plate Kit item #C59JR. This adapter connects right to the tow hooks without…

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What is the Difference Between the Blue Ox Patriot BRK2019 & BRK2022?

Gladly! The difference between the Blue Ox Patriot 3 Radio Frequency, Portable Braking System BRK2019 and the Blue Ox Patriot Radio Frequency, Portable Braking System #BLU37TR is that the Blue Ox Patriot 3 RBRK2019 is older, no longer available, and…

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Which is Better Roadmaster or Blue Ox Tow Bar

Both the Roadmaster and Blue Ox tow bars are great options. But if it was my decision to make I would go with the Blue Ox Avail part #BX7420 as we have found that the Blue Ox tow bars are a little easier to connect and disconnect from. Also this tow…

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Hey Christian, welcome to the world of RV-ing! So in addition to the Roadmaster Nighthawk #RM-676 you're also goin to need: - A baseplate kit, like the Roadmaster Direct-Connect Base Plate Kit #RM-521453-5. These attach to the Jeep itself so you…

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Parts Needed to Flat Tow 2025 GMC Canyon

Hey Steven, yeah the Blue Ox Avail part #BX7420 is a really solid tow bar and would work great for you. The correct base plate kit for a 2025 GMC Canyon would be the Blue Ox part #BLU85CR. For braking the Blue Ox Patriot part #BLU37TR is a really…

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Comparing The Roadmaster Invisibrake And Demco Stay-IN-Play Duo Supplemental Braking Systems

There are a few differences between the Demco Demco Stay-IN-Play DUO Supplemental Braking System w/ Wireless Coachlink Monitor #DM86VR and the Roadmaster InvisiBrake Supplemental Braking System #RM-8700. The biggest difference between the two is…

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Flat Tow Setup for 2024 Ford Maverick Hybrid

Hi Russ; you pretty much have everything you need right there with the exception of a few parts. I'm going to go ahead and list it all out here with links to make it easy for your to manage. You will need the following: -etrailer Invisible Base…

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What Baseplate Do I Need To Flat Tow a 2024 Chevrolet Tahoe Premier?

Hey James! I checked with our vendors and the correct baseplate for your 2024 Chevrolet Tahoe Premier is the Blue Ox item #BLU58FR. I have linked the installation instructions below and they specifically mention the Premier model right at the top of…

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How to Flat-Tow a 2012 - 2014 Honda CR-V with All Four Wheels Down

In order to flat-tow a 2012 - 2014 Honda CR-V with all four wheels on the ground behind a motorhome you are going to need a tow bar, base plate kit, safety cables, tail light wiring harness, supplemental braking system, and possibly a high-low…

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How To Know If Your Tiffin Motorhome Has A Towed Air Brake Setup Or BrakeSync

To determine if your motorhome has the Tiffin air brake setup or Freightliner BrakeSync you'll need to look at the rear and see if there's an quick disconnect fitting for your air line. The standard Tiffin air coupler fitting would look like…

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Replacing 6-Way on Trailer With 7-Way Connector

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

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