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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

Our Price: $85.49
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Wheel Chocks
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Ultra-Fab Products Wheel Chocks - UF21-001091
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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 1-636-306-4830 for expert service.
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  • Reviews (403)
  • Q & A (0)
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  • Why etrailer?

Ultra-Fab Products Wheel Chocks

  • Trailer Wheel Chock
  • RV Wheel Chock
  • 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

Item # UF21-001091

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   (403 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.


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.


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.


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)!


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.

Working great, Holds trailer still while loading or unloading big boy toys .
Howard B - 04/06/2021


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
William - 11/03/2022


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.
LRS - 07/13/2022


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.


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


These work great to stabilize the trailer and almost eliminate the wiggles and jiggles from people moving inside the trailer.


Works as intended very happy with your product.

Good product, the wrench is not very good but purchased a wrench dedicated for this.
Michael - 10/05/2022


Easy to use. Helps with sway after setu p.


Works great! Plus it has locks for antitheft protection.


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.

Im glad I purchased the chocks, the are where I had to set our 5th wheel has a 60 foot [] behind it.
Herman S - 04/15/2019


works really well. helps reduce the movement when walking around in our 26 ft trailer.


These work as advertised. Quite easy to install. The only weak issue is the locking system needs a padlock with a 3/16 shackle or less which I could not find anywhere. Manufacturer supplies the needed padlocks but they are not keyed the same. Perhaps in future versions the manufacture will provide space for a 1/4" shackle padlock so more padlock options would be available.


Work well. Trailer a little more stable


So far, so good. Wanted 'something' to keep my trailer from moving around when loading.


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


I purchased these chocks as a recommendation from KeepYourDaydream. To my surprise, these chocks came with the ratchet tool as well as a flip top cover and padlock! Put these chocks in and the trailer is not going anywhere!!

Working very well!!
Stephen - 08/24/2021


I took them out of the box and installed them on my trailer. They seem to do what they are supposed to do, and the price was reasonable.

I chose Ultra-Fab over other brands because of my positive experience with Ultra-Fab products.

The chocks arrived in three days with E-Trailer's free shipping. Great service.

One year later, they still do what they are supposed to do. Thanks Ultra-Fab and ETrailer!
Mark M - 10/25/2017


They help keep the RV from rolling back and forth when walking around inside.


Excellent product. Won’t want to be without them.


They seem to work just great. We've used them several times this past year with no issues.


The wheel chock are in good shape but the box they were in was all ripped apart because they did not put any Foam inside the Box to support it and keep it from flying around.

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