RVibrake 4 Flat Tow Brake Systems

CURT RVibrake 4 Portable Flat Towing Brake System

When you hit the road with a towed car behind your RV, safety and peace of mind should be part of the package. The CURT RVibrake 4 Portable Flat Tow Brake System makes sure it is. Compact yet powerful, this little unit keeps your setup legal while also helping to protect your vehicle and everyone on board.

RVibrake 4 reacts in just half a second, slowing your towed vehicle the moment you press the brakes. Setup is quick and stress-free: Just place the unit in your vehicle, press one button, then let the built-in audio guide walk you through a 30-second checklist. It's that easy.

Plus, the included Bullseye wireless monitor puts live braking feedback right on your RV dashboard, so you always know what’s happening behind you. RVibrake 4 works with nearly every flat-towable vehicle on the road and even throws in extra hardware for the handful that need a special fit.

Simple, reliable, and ready for the long haul! That's RVibrake.

Key Features:

Adds braking capabilities to your towed vehicle when flat towing behind an RV
0.5-second reaction time helps keep you safe on the road
Brake-lock detection ensures proper installation to prevent towed vehicle brake damage
Simple, one-button interface automatically positions itself in the vehicle
Audio assistant effortlessly guides you through an easy, 30-second setup
Includes Bullseye wireless monitor and range extender for real-time monitoring

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Will RVibrake 4 Fit My Vehicle?

RViBrake 4 is designed to work with virtually all vehicles on the market, offering broad compatibility for flat towing setups. However, certain makes and models may require additional components to ensure proper installation and safe operation. These variations are typically due to unique vehicle designs, braking systems, or electrical configurations that require specific accommodations.

If your vehicle is not listed in the document below, no extra parts are necessary. Your RViBrake 4 is ready to go right out of the box. That said, we strongly recommend reviewing your vehicle owner’s manual to understand any manufacturer-specific guidelines, towing limitations, or special procedures that may apply to flat towing.

RViBrake 4 Required Accessories

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Smart Features for Fast, Safe Installation

Audio Assistant

With RVibrake's built-in Audio Assistant, you’re guided step-by-step through a quick 30-second setup so it’s done right every time, with zero guesswork.

Brake Lock Detection

During setup, Brake Lock Detection automatically alerts you if something isn't right, helping prevent costly brake damage before you hit the road.

One-Touch Auto Positioning

It's like magic. RVibrake 4 features a simple one-button interface that automatically positions the unit in your towed vehicle. No guesswork or repositioning needed.

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RVibrake 4 Portable Flat Towing System FAQ

1. What is RVibrake 4?

RVibrake 4 is the most compact and user-friendly portable auxiliary braking system on the market. When towing a vehicle behind your RV with a tow bar or A-frame, the law requires a supplemental braking system. Unlike other systems that press against the vehicle's seat during activation, RVibrake 4 is engineered to push against the floor pan. This design allows for a smaller, more efficient unit that’s quick to install and simple to store when not in use.

2. Will RVibrake 4 work in my towed vehicle?

Yes, RVibrake 4 fits in all vehicles. 90% of all vehicles have a rise in the floorboard that RVibrake pushes up against. There are another 5% that require the Phantom Bracket Universal Stop Plate (Phantom Bracket included in RVibrake System). Then lastly, there are another 5% that require a custom application. Both of these are provided free of charge.

3. Is RVibrake 4 required by law?

Using a supplemental braking system like the RVibrake 4 isn’t just a smart choice. It's the law in 49 U.S. states and throughout Canada. When towing a vehicle behind your motorhome with a tow bar or A-frame, that vehicle becomes passive “dead weight.” As the motorhome slows down or stops, the towed vehicle pushes forward, putting significant strain on the motorhome’s brakes. In some cases, this extra stress can lead to brake fade or even total brake failure. The added weight also dramatically increases stopping distance. RVibrake 4 counteracts this by applying its own braking force in the towed vehicle, relieving pressure on your RV’s braking system and reducing stopping distance for a safer, more controlled stop.

4. How long does it take to setup RVibrake 4?

Setup and removal can both be done in about 30 seconds. Setup does need to be done daily, as anytime you stop overnight, you'll need to unplug RVibrake 4. You'll also want to unplug and re-setup the brake anytime you start the ignition of your towed vehicle.