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  1. Safety Cables
  2. Roadmaster
  3. 8000 lbs GTW
  4. Straight Cables
  5. Snap Hooks
  6. 64 Inch Long
Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs

Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs

Item # RM-645
Our Price: $58.84
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Safety Cables
Shipping Weight: 3 lbs
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Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs Snap Hooks RM-645
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Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Each cable features a spring hook on one end and a quick-link on the other. Great Prices for the best safety cables from Roadmaster. Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs part number RM-645 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (215)
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  • Videos (3)
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Roadmaster Safety Cables - RM-645

  • 8000 lbs GTW
  • Straight Cables
  • Snap Hooks
  • 64 Inch Long
  • Roadmaster
  • Coated Cables

Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Each cable features a spring hook on one end and a quick-link on the other.


  • Safety cables offer extra security for your tow system
  • Aircraft-type, galvanized steel construction offers superior strength
  • Heavy-duty, drop-forged steel hooks have spring-loaded latches for added security
  • Vinyl coating keeps the cables from scratching and chipping your tow bar
  • Made in the USA
  • Limited Lifetime Warranty


  • Capacity: 8,000 lbs
  • Length: 64"
  • Quantity: 2

645 Road Master 64" Single Hook, Straight Safety Cables - 8,000 lbs

Video of Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Roadmaster Straight Safety Cables Installation

Today we're going to be installing the Roadmaster 64" Single Hook Straight Safety Cables, part number RM-645. In conjunction with the safety cables, this vehicle also has the Roadmaster Easy Floor Baseplate Kit installed, part number 523173-4, as well as the Roadmaster Falcon Tow Bar, part number RM-522. We've already got everything else hooked up on our tow bar set up. All that's left to do is tie in our safety cables. We'll go ahead and take the end that has just the loop on it and we'll feed it through the slot here on the side of our falcon tow bar. Go ahead and take the end of our safety cable and we'll feed it through. We'll pull it out down on this end.

We'll go ahead and take one of the quick links that comes with the safety cables. Go ahead and feed it through the opening right here on the tow bar. We'll then attach the short safety cable that comes off the baseplate to the tow bar. Then we'll add in our new 64" safety cable. We'll then close the D-ring or the quick link up.

We'll then take our adjustable wrench here and we'll tighten it down. Then go ahead and repeat the same process over on the other side. Now all that's left to do is hook our ends with the hooks on them to the safety cable ring here on our hitch. You want to make sure that when you do that that you cross the safety cables, so you'll take the one from the passenger side and hook it over here on the driver side, like that. Then we'll repeat the same process for the other one. That will do it for our installation of the Roadmaster 64" Single Hook Safety Cables, part number RM-645.


Customer Satisfaction Score:

Customer Reviews

Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs - RM-645

Average Customer Rating:  4.9 out of 5 stars   (215 Customer Reviews)

Get the strength of steel and the security of spring-loaded clasps with this pair of vinyl-coated safety cables. Each cable features a spring hook on one end and a quick-link on the other.


Don't need would like to return tow bar already has safety cables

Etrailer Expert

Jenny N.


Several of the tow bars do include safety cables, some do not. We will always state in the product description if they are included. I will have our Customer Service team reach out to you to assist with the return.


This kit worked out great for my 2022 Chevy Equinox. I like how it has separate side plates, which make it easier to attach the main bar. The points where it attaches to the frame seem plenty secure. It is important to watch the videos provided by etrailer as Ryan is very thorough and has good tips for installing. I would also recommend installing additional wiring while having the front end off. Overall, I was able to complete in my driveway. The hardest part was sorting out the wiring for whatever braking and tail lights you decide on. William S helped me pick all the necessary components needed for flat towing behind my Jayco RV. I am looking forward to a summer of camping and having more freedom to explore the area, now having a car.


Easy on and off! They seem strong and well made.


Great product. I needed longer Saftety Cables after installing a swing away coupler on my boat trailer tongue. This worked out very well. Well designed and arrived on time .

Randy B.


I am completely satisfied. Great product and great sales staff. I could not be happier.


Upgraded to a new tow vehicle and etrailer had all of the components that I needed. I was working with a short timeframe to get the new vehicle adapted before hitting the road for the summer. All parts were delivered promptly and with no damages or missing parts.


Thank you for your professional customer aervice


Fast delivery, good quality safety cables, just what my Tow bar needed.. Greta customer service too


I’ve used the Custer light bar for about 8000 miles and it’s been perfect. Great battery life although I only drive during day. It fits perfect on my 2022 Spark and I didn’t need to cut the wiring.


Quality looks good. Haven’t tried it yet but Soon. E-trailer is great. Will use them more


it works as it was designed....didn't lose my car or anything else...but the wiring for a trailer didn't have any wire in it so the lights and all would not work and you could not repair it for their were no wire inside the insulation...only problem that I have ever had with etrailer


It's a safety cable.


I have ordered several variations of RoadMaster towing accessories from etrailer over the years. etrailer is always helpful when I have a question, if they don't know the answer, they will send you where you can find the correct parts for your needs. That was the case with this order, my previous hook-up used the EZ hook safety cables. I bought a new Jeep to tow and the new base plate does not accept the EZ Hook Cables. After a conversation with etrailer customer service, they had me call RoadMaster for the solution RM-645 must be used. Ordered from etrailer and in just a few days the cables came in the mail. (I thought etrailer should have given free shipping, after all the products I have bought for over$100.00, but I guess not...) even with economy shipping, the cables arrived in short order. I am one of many satisfied etrailer customers, I'm sure.



After using the new cables for a year, the safety cables fit through the Roadmaster guide channels and have worked flawlessly ever since. I know thwere are other brands of tyowing set ups out there, but I am a Roadmaster satisfied customer!


Well made. Great fit and durability.


Worked just as it ought to.


I just received my locking pins and my safety cables for my road master tow hitch . I am very pleased that they fit perfectly for my tow hitch and the safety cables were a lot mor heavy duty ready then expected. Thank you e trailer for my order and on a timely arrival time for free shipping . I would gladly recommend your web site for all who need quality merchandise. Thank you. Sincerely Darrell



Working great


Used these with the Raodmaster Blackhawk 2 Tow bar and the Direct connect base kit with removable arms. They were easy to run thru the channels on the tow bar and did not hang down excessively. Very easy to connect with the hooks on one end and the O rings on the other. Would recommend!

Peggy A.


The cables are well made and very easy to take on and off. they fit well into the tow bar with ample play to them. Great purchase!


etrailer is my go to RV, trailer, towing supplier


I have been a loyal customer for 15 years. The associates and technicians are very knowledgeable. They have been extremely helpful in all of my projects. In addition their return policy is quite simple to deal with.


great to deal with fast service!


This thing is so easy to use. I like that you don’t have to be on a level surface to hook up.


This was part of many Roadmaster components I ordered from to set up my 2014 Honda CRV as a toad. Etrailer's website is excellent and their review videos and installation videos are very helpful. Their tech service department is excellent as well.

These safety cables are well made and fit well in the channels of the Roadmaster Falcon All-Terrain tow bar.

Note the etrailer video shows having to order extra rings to mount to the motorhome side. This is not necessary if you have a new Roadmaster baseplate with wide hole safety cabel attachment points. The looped ends and rings provided on the safety cab els should mount to the motorhome (and stay with the tow bar when disconnected and folded). The other end with the spring hinged hooks easily hook onto the baseplate with wide holes for the hooks.


I ordered both the Front and Rear anti-sway bar upgrade kits. The install on my 2016 E450 was quite simple, and accomplished easily in my driveway. The kit for the front was a simple remove and replace the OEM bar. The rear kit required drilling two holes to accomodate new mounting points. Other than that, it was also simply a matter of removing a few bolts, and replacing the factory bar. Some minor nits associated with the kits. The washers included in the kit for the rear didn't fit the bolts, also included in the kit. And, the instructions for the front kit didn't include torque specs for the bolts. A quick trip to the local hardware store, and a call to Roadmaster tech support solved the respective problems. Oddly, the Roadmaster tech guy read me THEIR instruction over the phone, and they DID include the necessary specs. I've intalled these kits on two different motor homes now. They work GREAT, and I highly recommend them if you're towing and it feels like the vehicle has a bit more roll than you like. HOWEVER, I would note that the difficulty of installation can vary widely. If you're planning to install yourself, I highly recommend downloading the instructions in advance, and crawling under your vehicle to check on accessibility. For the E450 kit, you'll have to be able to get under there with a drill, and not drill through any cables/lines that may run along the frame rails. You'll also have to be able to get a (typically somewhat large) torque wrench up in there. My experience suggests this can be nearly impossible on some vehicles without access to a grease pit or lift. Good luck!


You guys have been GREAT! Very helpful both on initial sale and with 2 individual tech follow up questions a few weeks after the install. HIGHLY RECOMMEND!


Just What I needed. The quality is excellent and the shipping was "Fantastic"


Order received early, intact and correc t!

Show More Reviews

See what our Experts say about this Roadmaster Safety Cables

  • Can Roadmaster Safety Cables Connect to 7/8 inch Diameter Hole of Base Plate Kit
    Yes the Roadmaster safety cables part # RM-645 would connect to a 7/8 inch diameter hole on the base plate kit using the connectors that come with the kit.
    view full answer...
  • Safety Cable Recommendation for a 2010 Toyota Tundra with a Bumper Mounted Trailer Coupler Ball
    What you can do is to use safety cables, like RoadMaster 64 Inch Single Hook, Straight Safety Cables, # RM-645. You can route one end through a hole on the bumper, pull it about half way through, and then attach both ends to the trailer.
    view full answer...
  • Where are Roadmaster 64 Inch Safety Cables Measured From?
    The Roadmaster 64" Single Hook, Straight Safety Cables # RM-645 is the overall length of the unit. If you are at all concerned with the amount of length I highly recommend going to a longer cable such as the 76" # RM-645-76 or the 80" Double Hook # RM-674.
    view full answer...
  • Recommended Safety Cable That Is At Least 64 Inches Long
    The safety cables I highly recommend are from Roadmaster, the Single Hook, Straight Safety Cables. These cables are galvanized steel with a strong vinyl coating for protection and hooks that are forged steel for optimal strength. You can get them in either 64 inch or 76 inch lengths: - 64 Inches (Single Hook): Roadmaster 64" Single Hook, Straight Safety Cables - 8,000 lbs # RM-645 - 64 Inches (Double Hook): RoadMaster 64" Double Hook, Straight Safety Cables - 10,000 lbs # RM-648 - 76...
    view full answer...
  • Is a Safety Strap Included with the Roadmaster Stowmaster Tow Bar
    The original Stowmaster tow bar came with a safety strap. The tow bar has been updated and they have done away with the strap. The description currently on the site is being updated as well and references to the strap will be removed. The strap in question is no longer available by itself since you are supposed to use safety cables such as # RM-645 and since the base plates for vehicles started including the shorter cables that go from the base plates to the vehicle frame.
    view full answer...
  • Can the Roadmaster # RM-645 Safety Cables Be Installed with the Hooks on the Base Plate Side
    If you have the room on your base plates connection to securely attach the hook, then there will be no issue with using the Roadmaster # RM-645 Safety Hooks. I found another option for you. The Roadmaster 64 Inch Double Hook Safety Cables, # RM-646, is the better option for you. Theses cables have the same features as the # RM-645 cables that you referenced, but this set includes hooks with spring loaded latches on both ends of the safety cable. These cable will make connecting and disconnecting...
    view full answer...
  • Straight or Coiled Cables for Falcon All-Terrain Tow Bar?
    Because this tow bar has a built-in cable guide, I would go with the straight cables, part RM-645. The coiled cables might be a little hard to thread through the cable guide.
    view full answer...
  • Recommended Safety Cable Extensions When Rise or Drop is Required for Level Flat Towing
    If you need to add just a little more length to safety cables like # RM-645 due to a high-low adapter, I recommend using the safety cable extensions. Based on your current cable capacity, we have the 10 inch # RM-650648-10 extensions. For a 4 inch drop these extensions will allow a little slack to meet your needs.
    view full answer...
  • Roadmaster Sterling All Terrain Tow Bar Safety Cables Replacement Recommendation
    For the Roadmaster Sterling Tow Bar the recommended length for replacement safety cables is 80 inches. Roadmaster lists the coiled cables part # RM-674 which are coiled only for a small portion of the cable and are straight for the rest of it.
    view full answer...
  • Recommended Straight Safety Cables For Roadmaster Falcon Tow Bar With Enclosed Cable Guides
    Since the guides on the Roadmaster Falcon Tow Bar # RM-522 are enclosed, I would go with straight cables. The coiled may have a tendency to want to coil up and that would not work with the Falcon. The cables I recommend are part # RM-645. These are 64-inch long straight cables and will work well with the Falcon tow bar.
    view full answer...
  • Recommended Supplemental Braking for 2000 Jeep TJ
    I recommend the Roadmaster InvisiBrake Supplemental Braking System, # RM-8700. You will also need the Roadmaster Flexo-coil Wiring Kit, # RM-15267. I also recommend you use safety cables such as the Roadmaster 64" Single Hook, Straight Safety Cables, # RM-645.
    view full answer...
  • Coiled or Straight Safety Cables for Roadmaster Falcon All Terrain Tow Bar
    In general people tend to like the coiled safely cables like # RM-643 more simply because the design helps to keep the extra slack from hanging lower towards the ground or getting tangled on something. With that being said when it comes to tow bars like the Roadmaster Falcon All Terrain # RM-522 that you referenced, which feature integrated cable channels, straight safety cables are the better option. Straight cables like # RM-645 are just going to provide easier installation when feeding...
    view full answer...
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  • Availability of 6,000 lb. Rated Safety Cable
    The Roadmaster, # RM-645 is a 64" length single hook, safety cables -rated at 8,000 lbs. We have a shorter 40" length vinyl coated safety cables, # DL20119 that is rated at 6,500 lbs.
    view full answer...
  • Base Plates and Accessories for 2008 Honda Fit Sport
    According to my contact at Roadmaster, the # 521558 base plate kit will indeed fit all models of the 2008 Honda Fit, including the Sport model. In my research, I found that the Fit is capable of being flat towed without modification, but you will want to consult the owners manual and follow the recommendations listed under the Recreational Towing section. You will also need a tow bar, safety cables, a lighting solution and a supplemental braking system to flat tow your Fit. The Roadmaster...
    view full answer...
  • Is There A 10,000lb Straight Safety Cable To Slide Through The Blackhawk 2 Tow Bar Channels
    The highest capacity straight safety cable we currently carry that could be passed through the channels of the Roadmaster BlackHawk 2 All Terrain # RM-422 is only going to be the 8,000lb capacity Roadmaster 64" Single Hook, Straight Safety Cables # RM-645. We do carry higher rated options but they already have the clevis attached on both ends so you wouldn't be able to pass them through the channels. All that being said the curb weight of a 2018 Ford F-150 ranges from 4,069 to 5,697lbs...
    view full answer...
  • Tow Bar, Base Plates and Accessories Needed to Flat Tow 2001 Honda CRV
    The Roadmaster # 1528-3 base plates and the Falcon 2 tow bar would both work very well with your 2001 Honda CRV. You will also need safety cables which are not included with the tow bar, like part # RM-645. The Falcon 2 actually has guides built into it to keep the cables from being tangled or damaged. You will also need a wiring solution so that the tail lights on the CRV work in tandem with those of the RV. The Roadmaster Bulb and Socket Kit, part # RM-155 is an easy to use and install...
    view full answer...
  • Recommended Parts Needed to Tow 2002 Volkswagen Cabrio Behind a Motorhome
    When towing behind a motorhome there are five required items: baseplates for towed vehicle, towbar, lights, supplemental braking system, safety cables, and lights. The RoadMaster Base Plate # 521227-1 that you picked out will fit your 2002 Volkswagen Cabrio, however, the Tow Ready Towbar # 63180 is not rated for towing above 45mph, therefore, the RoadMaster # RM-020 is better suited for you. When deciding upon the length of the safety cable you would like to use, one recommendation would...
    view full answer...
  • Parts Included With Roadmaster Base Plate Kit # 522112-1 for 2013 Kia Soul
    According to Roadmaster, the # 522112-1 base plate kit is compatible with the 2013 Kia Soul, manual transmission equipped models only. (Auto transmission models are not flat towable.) I am not sure what you mean by the forks . . . are you referring to the removable draw bars that the tow bar quick disconnects would attach to? (Refer to part # 15 and 16 shown on the first page of the instructions I have linked to.) The diagram also shows everything included with the base plate kit, including...
    view full answer...
    Image 1 for
  • Proper Safety Cables to Use with the Roadmaster Direct-Connect Base Plate
    I spoke with Roadmaster to help with this, and we have a solution. The EZ Hook Safety Cables, part # RM-655, are not compatible with the Direct-Connect Base Plate Kit for the 2020 Chevrolet Traverse, part # RM-523200-5. The Base Plate you have does not have a spot for the anchors of the cables to mount to. Instead, use the Single Hook Cables, part # RM-645. I've linked to a video installation of these cables so you can see how they work.
    view full answer...
  • Safety Cables for a Roadmaster Falcon Tow Bar
    The Falcon tow bar, # RM-522, has a channel to run the safety cables through so you will want to use straight safety cables like the 64 inch Single Hook, Straight Safety Cables, # RM-645. Safety cables are not included and must be purchased separately. We also have a towing combo kit, # RM-9243-1, that includes the safety cables and accessories needed for the RM-522 Falcon tow bar. Let me know if you need further assistance.
    view full answer...
  • Can The Durabilt Ratchet Chain Binder Be Used On a D-Ring To Haul Cargo
    Yes, you could attach the Durabilt Ratchet Chain Binder w/ T-Handle and Chain for 5/16" to 3/8" Chains # DU42MR could be used to attach to cargo and through a d-ring to itself. Since the clevis doesn't come with a clip to prevent it from unlatching you would have to have constant tension on the chain to prevent it from just falling loose. You'd also need to know the capacity of the D-Ring so that you don't overload it and have it break off. You'd most likely be better off using a safety...
    view full answer...
    Image 1 for
  • What Other Parts Are Needed To Tow A 2008 Toyota Tacoma With A Roadmaster Tow Bar
    The Roadmaster 5000 (Tracker) Tow Bar is compatible with the Roadmaster XL Base Plate Kit # 1175-1, and will fit your 2008 Toyota Tacoma Double Cab as long as it is not an X-Runner model. The base plates will install underneath the bumper (see picture to the right). I do not have any tow bar base plates that will install through the bumper. You will also need safety cables should the tow bar become disconnected. These are required by law across the country. The safety cables you will need...
    view full answer...
    Image 1 for
  • Warranty of Roadmaster Falcon All-Terrain Tow Bar & How do Cables go Through Channels
    The Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522 has a lifetime warranty. And as for safety cables like # RM-645 and a wiring kit like # RM-152-98146-7 you will simply push them right through the channels of the Roadmaster Falcon All Terrain, Non-Binding Tow Bar # RM-522. The channels on the Falcon # RM-522 are open on both ends, and generally people will feed the wiring and chains through once and leave them in the channels rather than push them through each time they...
    view full answer...
  • Tow Bar and Base Plate Recommendation for 2010 Subaru Impreza WRX
    This Roadmaster XL Base Plate Kit - Removable Arms, part # 919-1, is the mounting point for towing a 2008-2011 Subura Impreza behind an RV or truck using a tow bar such as the RoadMaster Falcon 2 Tow Bar - 6,000 lbs, part # RM-520. If that is what you plan on doing with your Subaru you may also need the following items: RoadMaster 64 inch Single Hook, Straight Safety Cables, part # RM-645 Magnetic Towing Light Kit, part # RM-2120
    view full answer...

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