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Ultra-Fab Chock and Lock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2

Ultra-Fab Chock and Lock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2

Item # UF21-001070
Our Price: $108.82
You Save: $51.02
Wheel Chocks
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Shipping Weight: 11 lbs
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Rid your rig of the rocking with these easy-to-use, stabilizing wheel chocks. Simply place the chocks between the tandem tires on either side of your RV and expand them until the give between the wheels is gone. For up to 5-1/4" wheel spacing. Great Prices for the best wheel chocks from Ultra-Fab Products. Ultra-Fab Chock and Lock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2 part number UF21-001070 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (158)
  • Q & A (0)
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  • Why etrailer?

Ultra-Fab Products Wheel Chocks - UF21-001070

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

Rid your rig of the rocking with these easy-to-use, stabilizing wheel chocks. Simply place the chocks between the tandem tires on either side of your RV and expand them until the give between the wheels is gone. For up to 5-1/4" wheel spacing.


  • Wheel chocks eliminate give between tandem-axle tires to prevent rocking when parked
  • E-Z grip handles provide excellent leverage and are lockable to deter theft
    • Padlocks sold separately
  • Super-grip louvers on arms grip tire tread to prevent slipping
  • Heavy-gauge steel construction
  • Corrosion-resistant zinc plating


  • Quantity: 2 wheel chocks
  • Application: dual-axle trailers and RVs
    • Wheel spacing: 1-1/2" - 5-1/4"
  • Lifetime warranty

Note: The purpose of the Chock and Lock is to limit front-to-back motion on parked tandem-axle trailers. Do not use as brakes or wheel wedges.

Eliminate the annoying rocking of your trailer or RV no matter where you park it. The Chock and Lock stabilizers brace your tandem wheels against one another, stabilizing your trailer even on unlevel terrain. No more front-to-back motion.

Chock and Lock

Mounting the Chock and Lock

Adjust the chocks using the threaded rod and nut at the top of each unit. Simply place a chock, in the open position, between the tandem tires and turn the nut on the rod until the width of the unit fits the spacing of your tires. Then press the handle down into the locked position to hold the chock firmly in place. The handle can be locked with a padlock (sold separately) for additional peace of mind.

21-001070 UltraFab Ultra-Deluxe Chock & Lock - 2 Pack

Customer Satisfaction Score:

Customer Reviews

Ultra-Fab Chock and Lock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2 - UF21-001070

Average Customer Rating:  4.7 out of 5 stars   (158 Customer Reviews)

Rid your rig of the rocking with these easy-to-use, stabilizing wheel chocks. Simply place the chocks between the tandem tires on either side of your RV and expand them until the give between the wheels is gone. For up to 5-1/4" wheel spacing.


These have reduced/stopped the rocking of my trailer which is the reason I purchased them. My only issue is that my tires are so close together I am not able to put a lock on them. I have purchased other items from etrailer and have been very pleased with their service.


Easy on line purchase!
Fast delivery!
in perfect condition!
Easy to use!
Arrived just in time for our trip out!
Thank you etrailer!!! We'll be purchasing from you again in the near future for other items ????


If your using conventional wheel chocks, and are tired of your rig rocking with every walk across the floor, I highly recommend these chock/stabilizers. They were easy to set up, and totally eliminate the rocking.


Adds additional stability, easy to install, no tools required ,great and simple product.

After about the third time I used them one broke . The aluminum rivet in the cam lever sheared off I would not recommend this product. They should not be made with aluminum pop rivets
TBW - 07/05/2014
TBW, I am in the customer service department at Ultra-Fab Products and I am sorry that one of your Chock has failed. I do want to let you know that we use steel rivets in our Chock & Locks and handle is held in place with a small machine screw and sometimes this screw will break. This is a proven product for us and we have very few warranty problems. Also your Chock & Locks do have a lifetime warranty so I would like to hear from you so we can help you with your broken Chock.
-- comment by: Randy U - 07/08/2014
TBW,This product is covered with a lifetime warranty and weve gotten in touch with Ultra-Fab. We passed them your contact info so they can get in touch about repair or replacing.
-- Etrailer Expert Patrick B - 07/08/2014


Still a little bit of shake, but does prevent some shake


Super easy to chock qnd lock your wheels. Super sturdy and strong tool. Happy I bought this product. I'd recommend to all my camping friends


Used tire chocks and my trailer moved back an forth, Bought a pair tire locks and trailer doesn't budge put stands down and now im very stable no movement. Great product would recomend to any one

works great stops trailer from any movement backnforth
Chuck - 06/16/2017


Love them, It is amazing how little movement the trailer has now with these wheel chocks... Just make sure you get the correct width between the tires....

Still working Great. Little to no movement. Quality is holding up good.
David C - 06/03/2020


These do a great job securing the trailer on un-level ground. I always worried about the camper moving even with wheel chocks and the stabilizers down, but this solved the problem. Fine tuning the adjustable nut so you get the correct pressure on the tires takes a little time, but the results are worth it. I would buy these again without hesitation.


Heavey duty steel construction. The lever arm does provide enough expansion to lock the twin axle wheels and prevent movement. The chocks do prevent movement when walking around in trailer and are effective as chocks. However the pivot points are large pop rivet construction and a sloppy fit. Personally I would rather see hardened bolts and locking nuts.


These wheel locks worked great. they are light weight and easy to install. etrailer delivered them fast. I also bought the towing mirrors which are good quality. I am very happy with my purchase and the customer service i received from etrailer.


It's a great idea with poor quality screws. Took it out of the box and while doing the intial adjustment the screw that the locking handle rotates on (it handles the stress of pinching between the tires) sheared off. So a new item out of the box needs to be drilled out and the screw replaced with a quality bolt. Other than that I think the idea and adjustability of the item should work well. Just think I should have lasted longer than 5 minutes before I have to fix it.


I just purchased a set of these for my toy hauler. They took a few minutes to get set up properly. Watch your fingers during this process as it is easy to get bit. Not a big deal since you only need to do this once before use. They were easy to install and do a great job of keeping the trailer in place. These are much better than the cheap plastic wheel chocks as you don't have to move the trailer and preload them against the tires to work properly. I wish I would have bought these years ago.


The Ultra-Fab Chock & Wheel Stabilizers are pretty much what I expected. The build quality is good and they are perhaps even a bit more heavy duty than I thought they'd be. I was pleased that the adjustment and cam lever worked exactly as shown in the video. Though we haven't had the opportunity to enjoy a weekend of camping with them yet, it seem clear they will eliminate any to-and-fro motion in the trailer due to wheel movement.


The trailer is now steady as a rock. These chocks work as advertised. My wife is happ and you know what that means.

Super !!!
bob w - 06/05/2015


RV wheel chocks work great. The grab handles make it easy to place them between the tires & hold them in-place while expanding them to lock the tires in-place.


I originally bought a set for my first trailer and liked them so much that when I bought my second trailer, I bought a second set of them. Before you try to use them the first time adjust them to the tire gap and then once adjusted they are simple and easy to use.

I am still very happy with the wheel chocks. They are so easy to use and Im sure they will last for many years to come. Once again Etrailer has come through with quality products at a fair price.
Mike B - 04/12/2020


This product is easy to adjust to fit between camper tires and easy to install with just a flick of a lever. They hold the camper secure and alleviate rocking forward and back.


Though I haven't installed these lock wheel stabilizers on our trailer as yet, I was very pleased with the timeliness of their arrival to my home. The stabilizers seem to be of good quality and were reasonably priced. If the need arises, I will make other purchases from Thanks! Bob S.


I always chock my wheels but the trailer still would oscillate fore and aft. These seem to solve that problem as advertised. Like the idea of being able to lock them (Don't want them wandering away) as the investment is significant to an old guy on a fixed income. Great service and fast shipping from etrailer team. Problem? Just call Customer Service and ask for Ian. Really good at his craft.


all the products that came from e-trailer is a very good. fifth wheel hitch etc. I will always purchase my trailer needs from e-trailer. thks


This product is great and a huge improvement over the standard wheel chocks. They were a decent price however the value was reduced due to the shipping costs to my location.


Great products at a great price.


I had a couple issues with an order and contacted customer support (Shelia C) and she handled everything with precision. 1 1/2 days later, the package was sitting on my front door step. E-trailer has phenomenal customer support and logistics.


Great for setting the trailer in place. Work way better than plain wheel chocks. Can be locked in place which is a nice feature.

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