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When you hit the brakes, you want your towed vehicle to follow along naturally. The Roadmaster BrakeMaster uses the air pressure from your RV’s brake line to apply the towed car’s brakes at the same time and with the same intensity. That means your brakes respond together—no delay, no jerky stops, and no false activations on bumps. It’s a true proportional system that feels smooth and predictable every time, giving you the same confident braking you have when driving solo.
Because the BrakeMaster ties directly into your RV’s air or air-over-hydraulic brakes, there’s no inertia sensor guessing when to stop. The actuator responds only when you actually press the pedal on the motorhome, ensuring accurate braking without over-reacting to rough terrain. The result is reliable performance that protects your brakes from unnecessary wear.
This system combines the clean look of a permanent install with the convenience of a quick-release actuator. Most components stay installed out of sight, while the lightweight actuating cylinder attaches to your brake pedal and seat for each trip. It braces securely in place, then disconnects and stores easily when you’re done. Once installed, getting ready to tow takes just a few minutes—pin the pedal clamp, connect the air line, and you’re set.
If a tow bar failure or hitch disconnect ever happens, the integrated BrakeAway system steps in instantly. A reservoir under the hood stores pressurized air and powers the actuator to apply the brakes, bringing the towed vehicle to a safe stop. It’s a fail-safe design that meets U.S. and Canadian braking requirements and gives you peace of mind every time you hit the road.
The BrakeMaster includes an LED indicator light that mounts on your RV’s dashboard. It connects directly to the towed vehicle’s brake light switch, so it only lights when the brakes are actually applied—not just when the system activates. You’ll always know your setup is working properly and that your towed vehicle is braking right when it should.
Flat towing can be a much more convenient way to take your car RVing with you than using a trailer or a tow dolly. It'll save you storage space both at home and at the campsite, and it takes less time and hassle to hook up.
To flat tow your vehicle, there are 5 basic components you're going to need: a tow bar, a base plate kit, a safety cable set, tow bar wiring, and a flat tow braking system.
| For the RV | Between the RV and Towed Car | For the Towed Car |
|---|---|---|
| Hitch | Tow bar | Base plate |
| Wiring plug | Safety cables | Braking system |
| Wiring adapter cord | Wiring kit/diodes |
The custom-fit base plate installs on the frame of your toad so you can connect the car to your RV with a tow bar. Hook up safety cables between the vehicles to ensure that the toad does not separate from the motorhome if the tow bar becomes detached. Tow bar wiring syncs your vehicle's signal lights with your motorhome's tail lights, as required by law in most states. Finally, the flat tow braking system - also required in most states - activates the brakes in the toad when you hit the brakes in the RV, making for smoother, safer braking, and preventing wear on your motorhome.
Alternate Instructions
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
Ratings & Reviews
Allan
10/30/2022
Many thousands of miles, across deserts and over mountains, without a single issue or problem! Definitely recommend this system to any RV’er with coach air brakes.
Dave
5/23/2024
The product has worked perfectly.
Do you have a question about this Flat Tow Brake System?
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John
5/3/2026
Working well.