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Hooking up on uneven ground can be a hassle if the arms won’t budge or need perfect alignment. The stainless steel, telescoping arms on this tow bar slide in and out smoothly and lock automatically when you pull forward. When it’s time to disconnect, non-binding levers let you release tension with one quick pull. Even on angled sites, it breaks free without the tugging or rocking.


The aircraft-grade aluminum body keeps weight down to 35 lbs while still handling up to 8,000 lbs of towing capacity. It’s rustproof, powder-coated, and built to take road grit and weather without wearing out. The inner stainless steel arms and self-lubricated bushings keep movement smooth and dependable trip after trip.
No more tangled cords or dragging cables. Built-in cable guides route the included safety cables and 6-way electrical cord right through the tow bar arms. The vinyl-coated cables resist corrosion and the spring-loaded latches keep them secure. Everything stays organized, protected, and ready for the next run.

When the trip’s done, the bar folds up and stores directly on the back of the RV. Just push the arms together, tilt it up until the latch clicks, and swing it to either side. It stays locked in place and out of the way, keeping your setup clean and ready for the next hookup.

Finite Elemental Analysis (FEA) testing puts this tow bar under thousands of pounds of simulated stress to pinpoint and eliminate weak spots before production. The result is a design that’s tough, balanced, and proven to handle real-world miles without compromise.

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.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at this Roadmaster Sterling All-Terrain Non-Binding Tow Bar for the Blue Ox Base Plates, has an 8,000-pound weight capacity. Now, this tow bar here is gonna let you tow your vehicle safely and securely behind your RV. The shank portion right here is what'll slide into your 2-inch trailer hitch receiver on the RV. There's no ball mount necessary.
And if you notice, it does include the pin and clip for securing it. This is gonna give you a large hookup radius, makes connecting a breeze at any angle, even if your vehicle isn't perfectly lined up with your RV. It offers a self-aligning design. You just hook up and drive the RV forward. And the extra-long, I think the arms right here, you can see, they'll extend into a widget, non-ready towing position.
And if you notice you heard 'em, they automatically lock into place, and you're all ready to go. It is a non-binding design, so it's gonna allow you to release your vehicle at any time, anywhere, even on unlevel ground. And to show you how to do that, I just wanna zoom in. The main thing here is this latch. This latch here, if you just lift up on it, makes it very easy to release the tension that can build up in these telescoping arms.
When the RV and the tow car not perfectly lined up, all you have to do is just flip the latch up. That'll release the pressure, and then you see the arms will be able to telescope freely back, makes it very easy to disconnect the tow bar from the base plates. This is gonna allow you to disconnect even when you're at a hard angle or out of level. Now, the extra-long telescoping arms right here, these are gonna allow for better maneuverability, easier towing, arm length. Lemme just show you on this one right here that pulls out all the way, the arm length, which is gonna be measured from the center of the hitch pin hole to the center of the quick disconnect bar.
So when it's extended like this, it's gonna be 52 inches. We released it and retract it all the way. The measurement retracted is 40-1/2 inches. The arms themselves, they are a stainless steel construction. The inner arms are allows for nice smooth operation. Now, this is a strong, corrosion-resistant tow bar. It is built to last. It does meet the FEA testing, which will guarantee a strong finished product. The self-lubricated, nylon bushings will eliminate friction between the inner and outer arms for a longer lasting, better functioning system. And the finish on this is a nice, high-tech, powder coat finish, provides additional durability. Also, another feature might be hard to see for you, but on the bottom side of this, they have cable guides, which will protect the included power cord right here and the safety cables 'cause you can run it through there, and it'll keep 'em from dragging on the ground so it keeps 'em from getting damaged or tangled. And to store this, it's a very simple, secure storage alongside your motor home. All you have to do is simply fold the tow bar arms together and then flip it up towards the RV. And this will lock right into this built-in storage latch here and keep it upright out of the way. It's a very fast, easy hookup and disconnect using these included pins and clips. Parts are made in the USA. Again, the compatibility on this one is it works with the Blue Ox Base Plates. You can see it includes the adapters for the Blue Ox Base Plates, so you don't have to purchase any extra parts. Application fits 2-inch x 2-inch trailer hitch receivers, and the weight capacity on this is 8,000 pounds. That's gonna do it for a look at the Roadmaster Sterling All-Terrain Non-Binding Tow Bar for your Blue Ox Base Plates.
Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
Ratings & Reviews

Jenny N.
4/18/2022
Thank you for sending the picture that I asked for. It is surprising that they have rusted quickly. Since they are not made of a stainless steel or aluminum they will typically eventually rust. As you stated in your review it will be best to clean them up and then use a rust resistant clear product on the bolts. They are also available for replacement as part # RM-910029.

Michael
4/29/2024
I could not be happier with the performance of this tow bar! Our last trip was 3 months and 4000 miles and the unit performed flawlessly. I would not hesitate to recommend or purchase this Roadmaster Sterling tow bar to anyone.

Rick C.
2/1/2020
I have now towed my car about 8,000 miles and it still works great. Very happy with Roadmaster and etrailer!

Robert D.
5/18/2021
Love it. Highly recommend

Richard M.
10/7/2014
I also had an older model and almost always had to fight with the release when trying to unhook the towed car.The All Terrain non-binding Freedom Latch has solved that problem very well. It is an outstanding improvement in the RoadMaster Sterling model. I have been satisfied with the purchase.

John C.
3/25/2016
Still totally satisfied with the product.

Dwayne M.
4/2/2016
Great 10000 mile towing trip

Terry
7/31/2024
In the past year the towbar has been used numerous times. We recently completed a trip to Alaska from the lower 48 states. On extremely rough roads Alaka Highway the towbar performed flawlessly. It is easy to hookup and easy to unhook. We are very happy with our purchase.

Tom R.
1/18/2021
Have used numerous times without a single issue. Hookups are very easy and the disconnects are usually the same. Once in awhile if the toad is not perfectly straight in line with the coach it may bind.

Bobg
12/8/2017
Excellent product. Super Heavy Duty
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Mike L.
4/17/2026
Thanks Steven, I'm glad to hear that you're all fixed up!!! Happy travels!