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Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2

Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2

Item # UF21-001091
Our Price: $96.32
Wheel Chocks
Shipping Weight: 11 lbs
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Designed for tandem-axle trailers with up to 10-1/2" wheel spacing, these wheel chocks will rid your rig of rocking by stabilizing your trailer or RV. Simply place the chocks between tandem tires and expand them until the give is gone. Great Prices for the best wheel chocks from Ultra-Fab Products. Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2 part number UF21-001091 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (429)
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Ultra-Fab Products Wheel Chocks - UF21-001091

  • RV
  • Trailer
  • Wheel Chock
  • Wheel Stabilizer
  • Pair of Chocks
  • Steel
  • Ultra-Fab Products
  • Silver

Designed for tandem-axle trailers with up to 10-1/2" wheel spacing, these wheel chocks will rid your rig of rocking by stabilizing your trailer or RV. Simply place the chocks between tandem tires and expand them until the give is gone.


  • Wheel chocks eliminate give between tandem-axle tires to prevent rocking when parked
  • Pivoting louvers on arms grip tire tread to prevent slipping
  • Included E-Z ratchet makes it simple to expand units
  • Lockable to deter theft - padlocks included
  • Heavy-gauge steel construction
  • Corrosion-resistant zinc plating


  • Application: RVs with up to 15" wheels
  • Collapsed width:
    • Center of chock: 1"
    • Ends of chock: 5"
  • Fully extended width at ends of chock: 10-1/2"
  • Quantity: 2 wheel chocks
  • Lifetime limited warranty

Note: The purpose of the Super Grip Chock is to limit front-to-back motion on parked tandem-axle trailers. Do not use as a brake or a wheel wedge.

Eliminate the annoying rocking of your trailer or RV no matter where you park it. The Super Grip Chock braces your tandem wheels against one another, stabilizing your trailer even on uneven terrain. No more front-to-back motion.

Pivoting Louver Technology

Pivoting Louvers

The pivoting louvers allow the Super Grip Chock to get a stronger grip on your tires as they hug the surface of each tire. The raised ridges grip onto the tire tread to keep the chock from slipping. The louvers can also swivel to conform to the exact curve of your tires, creating a better grip on the tires. As a result, the Super Grip Chock is able to apply the force necessary between the tires to provide excellent stability for your trailer or RV.

Mounting the Super Grip Chock

The included E-Z ratchet makes it fast and easy to set up the Super Grip Chock. Simply place the chock, in the open position, between the tandem tires of your trailer and use the ratchet to turn the nut on the rod until the width of the unit fits the spacing of your tires. Once the chock is firmly in place, lock it with the included padlock.

UF21-001091 Wheel Spacing Requirements

21-001091 Ultra Fab Super Grip Chocks - Tandem Axle - Expands 10-1/2" - Qty 2

Customer Satisfaction Score:

Customer Reviews

Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2 - UF21-001091

Average Customer Rating:  4.7 out of 5 stars   (429 Customer Reviews)

Designed for tandem-axle trailers with up to 10-1/2" wheel spacing, these wheel chocks will rid your rig of rocking by stabilizing your trailer or RV. Simply place the chocks between tandem tires and expand them until the give is gone.


These things work great! I have found it is best to install them before you disconnect the trailer so that nothing moves when you take your trailer from the hitch. It also eliminated that little shimmy you got when you walk forward and aft in the trailer. These chocks are a “must have” in my book.



Awesome, don’t leave home without them!


They work perfect in holding my trailer.
ordered them as a pair with locks . The locks are little like what should be used on toys or luggage and as a pair ,they aren't keyed alike.

Howard B.


Working great, Holds trailer still while loading or unloading big boy toys .


The supper grip chock wheel stabilizers are a great product. I have purchased two sets, one for myself and one for my in-laws. Quality construction and easy to use.


eTrailer is a great place to purchase your trailer equipment. I rated the wheel chocks a 4 as it assists with trailer rock but not completely. However, they do help.


These chocks are great. They are fairly quick to setup and provide better roll security than traditional wedge blocks plus the benefit of limiting trailer rocking. The only negative we’ve noticed is that the ratchet/wrench provided to secure them is low quality and the ratchet has worn out. Nonetheless I would definitely purchase these again.


They fit my 2013 Chevy Express conversion van. Took a little more squeezing then I expected to get the clip bolt and nut to thread together. That bolt and nut are plastic. I expect over time they will either cross thread or simply wear out. Should have been a metal bolt and nut.


too soon to tell but I can tell a difference inside the trailer. I hope they last.


These RV stabilizers arrived lightning fast. They were the best price on the internet by far and it took me maybe 15 minutes to install them. This is the second product I've purchased from eTrailer. Since we live in our RV right now, without a doubt I'm impressed with this company and will always consider their products before others.

Steven & Christina


Seems like a well made product, but I think they could have put a bit more thought (and engineering) into the locking provision for the adjusting nut. If you're going to go to the trouble of making it difficult for unauthorized loosening (i.e. theft) then go ahead and make it more "meaningful". Example...the cheesy toy padlocks are about as secure as a zip tie. Otherwise seems like it will serve the purpose. These are going to be to help provide additional rolling resistance when my trailer needs to be unhitched on a slight incline in front of my home (in addition to 4 heavy duty wheel chocks of course)!


As always, etrailer exceeds expectations. I placed my order Friday and the x-chocks shipped on Saturday! Fabulous customer service.

Will update the performance once spring hits and we're back out camping.


The chocks work great only reason for the 4 stars is the locks that came with the chocks don't fit very well, and the wrench that was included with them slips. I Replaced the wrench with a good ratcheting open end from the local hardware store and all is good.


As the instructions state the Super Grip Stabilizers are a little stiff at first to operate, otherwise they work to help tire movement when there is movement inside the camper. Wish the locks were keyed alike as I bought them as a pair. The loop handles are a nice feature with no open ends to hang up on anything. Like that they are made in the USA!



I should use them more than I do. If the stay is just over night it is not worth the hassle to put them on.


I purchased these along with a king pin tripod for a 2021 Grand Design 31MB. We immediately noticed a difference with limiting any residual movement in our 5th wheel. We have three kids, and this is a must! Thank you e-trailer for your awesome customer service and detailed information on items!


They work well. But less than one year old and the bolts that hold it together are showing rust.


The Super Grip Wheel Chocks are the best items I have ever purchased. They are easy to install between the tandem tires and keeps the trailer from moving when hooking up or unhooking the trailer from my truck. I wish I had pictures to show how glad I am now. We purchase a new 42' foot 5th wheel trailer and put it on the spot where the other trailer sat, almost at the edge of a 45 foot drop. I now feel VERY secure that it won't go anywhere. I was a tractor trailer driver for over 44 years, so I know the importance of stationary security to keep the unit from moving.

Herman S.


Im glad I purchased the chocks, the are where I had to set our 5th wheel has a 60 foot [] behind it.


Quick and easy to use, however don't trust them solely to keep your rig from moving. Had an incident about a week ago when I was using just them to chock my toy hauler but while unloading my second MC the trailer moved backwards some and the tounge support slid off their blocks. Fortunately no one was injured and only slight damage to the tongue support. These are good but I will always use in addition to my original wheel chocks.

Etrailer Expert

Heather A.


These Ultra-fab wheel stabilizers are designed to prevent rocking of the trailer when it is parked and to deter theft. They are not intended to replace wheel chocks/wedges or brakes. We do recommend to use additional wheel chocks such as Anderson wheel leveler and chock part # AM3604.


Worked great for changing my 5th wheel storage compartment over to gas struts.


Wrench that comes with it broke by its six installation.


once again your product did exactly it was suppose to. it took just a minute to install them and they steadied the trailer from any back and forth movment.



I still have nothing but good things to say about them. I have recommended them to other campers and will continue to do so


Would give 5 stars but I am going to have to do some fabricating on the nut so it will not fall off the threaded stem. If you loosen the spreader steam more then it should the stem will come out of the nut.


Jacks are easy to install and remove although a little difficult to get centered correctly between tandem wheels. I am a little disappointed in experiencing some movement in trailer yet when jacks are installed despite experimenting with tension on tires.

Etrailer Expert

Heather A.


The wheel stabilizers are only designed to keep the trailer from rocking while parked and to deter theft. They are not intended to take the place of wheel chocks/wedges or brakes for the wheels. Although these wheel stabilizers work well for what they are designed for, we always recommend to still use additional wheel chocks to keep the trailer from rolling. I recommend Andersen Camper Wheel Chock and Leveler part # AM3604.


Looking for something to secure my 24' travel trailer. I had inexpensive plastic block type wheel chocks that just didn't work the way I wanted them to. These secure the trailer, steady movement previously present with ground chocks, just elevates the sense of security when parked on any slope. Handy rachet included is a bonus.



Use these on every trip out with the travel trailer. Even got a bigger trailer last spring!


Good quality. Came with 2 small locks. I wish both locks would have been the same key.


Great website makes it easy to find what your looking for, lots of info that helped me make sure I got what I wanted. Got the parts when they said I would, the wheel chocks work awesome on our 26 ft traval trailer and way sway control mounted easy with instructions, also there were some helpful videos available if needed. I will definitely check Etrailer first for anything I need from now on.

Troy H.


Still working excellent no problems what so ever when people in the camp ground ask where to find items for their camper or truck I tell them to check out


The brackets work perfectly for my dual axle trailer. Helps to keep the rocking to a minimum. The down side, the ratchet that comes with them is junk. It lasted for two trips the would not work anymore (tried to lube etc still will not work). Thank goodness that I had my tool kit with me so could get these off. The two star rating is because of the ratchet. Using my tools these work perfect.

Etrailer Expert

Laura E.


Mike, thank you for your review and your business. We are sorry to hear of any inconvenience with your ratchet and have forwarded your review to our customer service team to see if we can resolve this for you.

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