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  1. Tow Bar
  2. Roadmaster
  3. Telescoping - Non-Binding
  4. Fits Blue Ox Base Plates
  5. Hitch Mount
  6. 8000 lbs
Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate - Non-Binding - LEDs - RV Mount - 8K
etrailer Installation
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Roadmaster

Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate - Non-Binding - LEDs - RV Mount - 8K

Part Number: RM-677
In Stock
$1,545.00
Retail:$2,477.47
You Save: $932.47
Tow Bar
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
This aluminum tow bar is the absolutely snazziest tow bar you can get. Sleek, lightweight, with built-in LEDs for increased visibility and safe driving at night. The electrical cord comes installed in the cable guide, keeping your setup organized. Great Prices for the best tow bar from Roadmaster. Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate - Non-Binding - LEDs - RV Mount - 8K part number RM-677 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Roadmaster Tow Bar - RM-677

Highlights

  • 8,000-lb Capacity: Handles heavy vehicles with stainless steel arms that lock as you drive forward.
  • Built-In LEDs: Light strips along the arms boost visibility and help you hook up safely after dark.
  • Non-Binding Release: Quick-pull levers free the arms fast so you can disconnect even on rough ground.
  • Integrated Cable Guides: Keep the included power cord and safety cables organized and off the pavement.
  • Folds for Storage: Swings up to latch on the RV’s back, saving space and shielding it from road debris.
Made in USA

Features to know about

Bright, Confident Towing: Built-In LED Light Strips

Driving after dark shouldn’t mean guessing where your tow bar is. The Roadmaster Nighthawk All-Terrain lights up its own arms with built-in LED strips powered through the included electrical cord. When you plug into your RV’s 7-way and switch on the taillights, the LEDs glow automatically. They make the whole towing setup visible to others and help you see what you’re doing when you arrive late to camp. It’s safety and convenience all in one—no separate switches or wiring needed.

Close-up of Roadmaster Nighthawk All-Terrain Tow Bar with integrated LED light strips illuminated between RV and towed vehicle for enhanced night visibility

Smooth Hookups and Easy Releases: Stainless Steel, Non-Binding Arms

Even when the ground isn’t level, connecting and disconnecting stays simple. The stainless-steel inner arms telescope from 40-1/2" to 52" so you can line up one side at a time. They self-align and lock automatically as you pull forward. When it’s time to unhook, just lift the non-binding levers to release any pressure. The rust-proof finish keeps the arms sliding smoothly year after year, no hammering or wrestling required.

Roadmaster Nighthawk All-Terrain Tow Bar stainless steel telescoping arms extended and connected for smooth, rust-resistant towing setup

Close-up of Roadmaster Nighthawk Tow Bar non-binding lever for easy vehicle disconnection on uneven ground

Extra Reach for Tighter Turns: Long Arm Design

Getting in and out of gas stations or tight campground lanes is easier when your tow bar gives you more room to maneuver. The Nighthawk’s extra-long arms provide a wider turning radius, helping your towed vehicle track cleanly behind without clipping corners or curbs. More clearance means less stress when navigating close quarters.

Tidy and Protected: Integrated Cable Guides

No more dragging or tangled cords. The built-in cable guides route the included power cord and safety cables right along the arms, keeping everything organized and off the pavement. Vinyl-coated cables resist corrosion, and spring-loaded latches keep the hooks secure. When you’re parked, everything stores together neatly on the back of the RV—ready for the next trip.

Roadmaster Nighthawk Tow Bar with integrated cable guides for organized routing of power cord and safety cables

Coiled power cord and safety cables threaded through Roadmaster Nighthawk Tow Bar cable channels for neat storage and protection

Roadmaster Nighthawk Tow Bar folded and latched for compact storage on back of RV

Lightweight Strength That Lasts: Aircraft-Grade Aluminum Body

At only 35 lbs, this 8,000-lb-rated tow bar is easy to handle but built to take the miles. Its aircraft-grade aluminum body resists rust, and the black matte powder coat keeps it looking sharp while protecting against dings. Roadmaster’s Finite Elemental Analysis testing ensures every stress point is reinforced, so you can tow heavy loads with long-term confidence.

Specs

Compatibility

  • Fits: Blue Ox base plates
  • Application: 2" x 2" trailer hitch receivers

Dimensions

  • Arm length (from center of hitch pin hole to center of base pin hole when lined up with arm straight): Extended: 52" Retracted: 40-1/2"

Weight and Capacity

  • Weight capacity: 8,000 lbs
  • Weight: 35 lbs

Warranty

  • Limited lifetime warranty

What You Need to Flat Tow

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.

677 Road Master Night Hawk for Blue Ox Baseplates - LED Light Strips - Motorhome Mounted Towbar - 2" Hitch - 8K Rating

Installation Details RM-677 Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.8

855 reviews
Review sort icon
This aluminum tow bar is the absolutely snazziest tow bar you can get. Sleek, lightweight, with built-in LEDs for increased visibility and safe driving at night. The electrical cord comes installed in the cable guide, keeping your setup organized.

by:

Bought the Roadmaster for a Blue Ox base plate. Perfect fit. Would be 5 stars for the product but gave it 4 stars for the packaging. Theis is a heavy item and the box is merely taped -- not stapled! Unsurprisingly, the box arrived completely open. That I can tell, nothing is missing but can't be certain until everything is put together. However, this could have easily gone the other way with missing items (and the ensuing hassle to get things corrected). To Roadmaster: USE STAPLES! To etrailer: Tape it better!



by:

The folks that designed this tow bar must have lots of experience hooking up and removing tow vehicles! Nice not to have to store safety cables and electrical wiring separately!!!



by:

Easiest tow bar I have ever used.
Never
gets in a bind where you can not unhook
having breakaway cables built in saves pinched and hanging cables



by:

Very well made. No bind to the extensions, and they have solid feel and a positive lock. The cable management system and lighting are are very helpful. Highly recommend this bar!



by:

Excellent product ! works great. Wish it came with a bag to cover it when not in use.



by:

Really nice tow bar, like the led lights. Recommend the vinyl cover to help keep things dry



by:

Tow bar appears to be very well made. Despite being made of aluminum, it is still very heavy and substantial. Lights look great and light up the area around the tow bar. Better made than the Blue Ox it is replacing (Blue ox said their tow bqr needs to be replaced after 10 years. Who makes a product that expensive that only lasts 10 years? Never again fir Blue OX for me...........



by:

This is my second Nighthawk towbar and they are great. Easy hookup and disconnect . well built and has been very reliable.



by:

What can I say, The Nighthawk is a top shelf tow bar. I love that it come complete with safety cables, wiring harness including the towed car side plug.



by:

Installed the Brakeaway System and finally got a chance to use it! It worked flawlessly! I added a pic of the location for my 2023 Jeep Gladiator Mojave. This was after staring into the engine compartment for 2 days so maybe this will help someone to decide?



by:

Glad I spent a few extra bucks for this tow bar. Like the ease of hooking up and the LED’s that light it up when connected. Had to change out the 7 way connector as it was damaged in shipment. E trailer helped me get a new connector (actually better than the original) so I’m super satisfied.



by:

Very nice tow bar. I like the way it stores on the back of my motor home.

Robert H. profile picture

Robert H.

12/21/2024

We have used the tow bar for a 3 month trip and 3,000 miles. It works great. I really like the lights in the bar. I would purchase again.



by:

THis towbar has been excellent at towing my Jeep Grand Cherokee behind my Class A RV.
Only complaint I have is the location of the wiring harness, it has been pinched during tight turns a couple time, but that is also on me for doing those turns.



by:

The Roadmaster tow setup is very easy to use and very well built. More importantly to me, the customer support at ETrailer is superb and I will be a repeat customer!



by:

I waited four months to install my tow setup because of COVID and it was worth it. The bar lets everyone on the road know the car is in tow and it is easy to hook and unhook regardless of the angle. The only problem is that the lights on the bar can overpower the night vision of the back up camera on our coach, but you don't back up when towing anyway.



by:

This is a nice towbar that packages up neatly and is easy to use. You do need to lift both arms to attach it to your toad. If you're alone, it's hard to lift both arms and somehow insert the pins. You'll need to work out a way to do it that works with your setup. The neck is really long on it also, with no additional holes if you want to shorten it up. Adding a hitch riser or drop makes it even longer between RV and toad. The break away cable on ours didn't even reach our RV, much less attach to something. We added another cable from the RV and all works. The included cables are what they are in general. No shortening or lengthening them out of the box. We have had a few binds that the handles didn't resolve. Wiggling and finagling does the job like any other towbar. It does seem to be really great quality and overall I would recommend it.



by:

I have purchased many Roadmaster products and they are generally well made. This unit had some fit and finish issues and the light strips are attached with adhesive and black silicon sealer. After having difficulty getting functionality in the wiring between the RV and towed vehicle and extensive testing the ground wire in the Roadmaster cable harness was bad. I called eTrailer as they are always very helpful/knowledgeable. In this instance they advised Roadmaster prefers to handle and quality issues. Roadmaster technical assistance was excellent, but the only choice was to return the whole tow bar and have them fix it or have them send a replacement wire harness and install it myself. Not wanting to wait for two-way shipping and repair I opted to do the repair and they shipped me a replacement wire harness. When I disassembled the unit, it was apparent the ground wire had pulled out of the butt connector where the cable is split in the middle to splice in the LEDs along the sides.
After repair everything was functional. Hookup and release of the bars to the towed vehicle is quite easy. If the wiring was good to begin with this would probably merit 5 stars for ease of installation and 4 stars for value. I will follow up if there are any further issues.



by:

Quick delivery and the tow bar was well packed and configured for my Blue Ox base plate. Thanks

William profile picture

William

4/18/2024

Very satisfied with the Roadmaster Tow Bar with the Blue Ox adapter. Easy to install and have not had any issues with the tow bar binding when detaching the bar from my toad.



by:

The hitch has worked as expected! Delivery was quick and accurate !



by:

Big improvement over my previous tie ba r.



by:

We've been towing our Jeep Grand Cherokee for about 8 months now with this tow bar and it's worked flawlessly! We've been places where the coach and Jeep are not perfectly aligned putting the attaching pins in a bind, but with a simple release of the handle it would release the arm and unbind the pin. Super easy to use. I highly recommend the Nighthawk All Terrain, Non-Binding tow bar. OH! The LED lights along the arm make it look great too!!

Sam profile picture

Sam

7/28/2024

We are really pleased with our purchase of the Nighthawk All Terrain tow bar. After a full of year and about 8 thousand miles of towing our jeep with this tow bar its still like new. Again we would highly recommend buying one if you want a quality towbar.



by:

Awesome Design. I love how everything is tucked away. It would've been nice to have some quick-connect points for the safety cables and pigtail when the Tow-Bar is in storage mode. As opposed to just wrapping the loose items and hooking back to themselves (seems tacky compared to the rest of the engineering). Beautiful Product!



by:

The lights at night are really nice. After 1200 miles towing my F150 this towbar really works perfectly



by:

Easy to install. Wire harness is great.



by:

This makes ground towing less than half the work,all the wiring and tow cables stay on the towbar ready to.connect


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See what our Experts say about this Roadmaster Tow Bar

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    The Roadmaster Blackhawk 2 # RM-422 comes with just the tow bar, although one feature it does have is cable guides to protect your safety cables and wiring. The Blackhawk 2 has a shipping weight of 64 lbs, so its weight will pretty close to that. The comparison between the Blackhack 2 and the Roadmaster Nighthawk All Terrain # RM-677 is the Blackhawk 2 has a weight capacity of 10,000 lbs, the Nighthawk 8,000 lbs: the Blackhawk 2 is made of steel and the Nighthawk is made of aluminum. The...
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    Hey Cody, We can get your 2025 Ram 1500 set up with a complete flat tow setup, and there are options for you regarding the baseplate, from both Demco and Blue Ox. Keep in mind this depends on the model of your '25 Ram 1500: - Demco Tabless Base Plate Kit # DM9519341 (Does not fit Rebel or TRX models) - Blue Ox Base Plate Kit # BLU49HR (Does not fit RHO models) Both are high-quality and will serve your Ram well, with the difference being the Blue Ox has a straight bar while the Demco...
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    Hey Jack! I would be happy to provide you with a list of parts to flat tow your 2024 Colorado Z71. Since you have the # RM-677 already you will need a Blue Ox base plate kit, wiring, and a supplemental brake system. I recommend the following: -Blue Ox Base Plate Kit - Removable Arms # BLU85CR -Roadmaster Universal Hy-Power Diode Wiring Kit # RM-152 -RoadMaster 6-Wire Trailer Connector - Vehicle End # RM-910030-7 and Bracket # RM-910030-5 -Roadmaster Battery Disconnect # RM-766 -Demco...
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  • 2015 Chevy Suburban Flat Tow Parts Recommendations
    Hey Ricardo, thanks for reaching out! Picking out the parts for flat towing can be a bit overwhelming, but I'd be happy to help out! Here are the parts I recommend installing on your 2015 Chevy Suburban: - Blue Ox Base Plate Kit # BX1718 (with Adaptive Cruise Control) or Kit # BX1716 (without Adaptive Cruise Control) - Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate # RM-677 - Hopkins Custom Tail Light Wiring Kit # HM56115 - 6-Way Connector # PK12720 - Roadmaster...
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  • Recommended Flat Towing Setup for a 2024 Cadillac Escalade
    I'd be happy to Jeremy. For your 2024 Cadillac Escalade, you're going to need: - A base plate kit, the Blue Ox Base Plate Kit # BLU34GR, - A set of tow bars, the Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate # RM-677, - A braking system, the Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes # SM99251 with a battery disconnect # RM-766, & - A wiring kit, the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267.
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    Hey Joseph! You have a pretty solid list going there. I went ahead and made some revisions for compatibility so you will need the following: -etrailer Invisible Base Plate Kit # e98949 -Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate # RM-677 -Roadmaster Accessory Kit for Nighthawk and Sterling Tow Bars # RM-9284-2 -Roadmaster Battery Charge Line Kit # RM-156-25 -Curt RVibrake Shadow 2 Flat Tow Brake System # RVI94FR I changed the version of the Nighthawk so it is...
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  • Finding Installer for Base Plate Kit that Fits 2018 Jeep Grand Cherokee
    Hey Jerry, we have an installer locater that I linked on this page that will allow you to find the best installer in your area. Do you have a base plate kit picked out already?
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  • Troubleshooting LED Lighting on Tow Bar and Wiring Kit for Towing a 2018 Jeep JL Wrangler Unlimited
    Since your Nighthawk All Terrain # RM-677 runs off of the running lights and you are having issues with the driver's side stop/turn function with the Hy-Power Diode Wiring Kit # RM-154 installed on your 2018 Jeep JL Wrangler Unlimited I recommend checking your connectors and grounds to make sure they are secure and that there aren't any places where there might be debris or corrosion. As far as the Hy-Power Diode Wiring Kit goes you may want to double check that you installed it using...
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    Image 1 for
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    Hello Joshua; I would be happy to get you all of the parts you need. A complete flat tow setup requires a tow bar, base plate, tow bar wiring, safety cables, and a supplemental braking system. You already picked out the Blue Ox Base Plate Kit # BO74FR and Roadmaster Nighthawk All-Terrain Tow Bar # RM-677. The Nighthawk comes with part of the wiring and the safety cables already. For the rest of the wiring along with locks to keep it secure and a cover for storage you can use the Roadmaster...
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    Hey Dennis! Here are the parts I recommend using to flat tow your 2020 Ford F-150: - etrailer Invisible Base Plate Kit # e86YR - Roadmaster Nighthawk All-Terrain Tow Bar # RM-677 - Roadmaster Accessory Kit # RM-9284-2 - Brake-Lite Relay Kit # RM-88400 - Brake Buddy Classic 3 # HM39494 - High-Low Adapter (see linked article - bracket height is 15-1/2") The tow bar is aluminum, so it only weighs in at 35 lbs (cutting down about 10 lbs or so from a steel bar), and then the Class 3...
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    Hello Paul, thank for reaching out. Here is a list of all the parts you will need to flat tow your 2021 Chevy Blazer V6 AWD: - Blue Ox Base Plate Kit - Removable Arms # BX1735 - Roadmaster Nighthawk All-Terrain Tow Bar for Blue Ox Base Plate - Non-Binding - LEDs - RV Mount - 8K # RM-677 - Roadmaster Universal Hy-Power Diode Wiring Kit # RM-152 - Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional # SM99251 - Roadmaster Battery Disconnect with Switch...
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  • Does etrailer Have Installer Recommendations for Flat Towing
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  • Is there a Baseplate for a 2016 Acura MDX?
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  • Which Tow Bar is Better Blue Ox Avail # BX7420 or Roadmaster Nighthawk # RM-676
    The Blue Ox has a life expectancy of 8-10 years, Blue Ox does recommend replacing it at this point. There are a few big differences between the Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar w/ LED Lights - RV Mount - 8K # RM-676 and the Blue Ox Avail Non-Binding Tow Bar - Motorhome Mount - 2" Hitch - 10,000 lbs # BX7420. As you said, the Blue Ox is made of steel and the Roadmaster is made of aluminum. The Blue Ox has a weight capacity of 10,000 lbs, while the Roadmaster is 8,000...
    view full answer...


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Condition: Badly Dinged

Notes: Item has minor cosmetic scratches and dings.

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