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Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide

Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide

Item # UF21-001060
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Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide Single Chock UF21-001060
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Rid your rig of the rocking with this easy-to-use, stabilizing wheel chock for dual-axle trailers and motor homes. Simply place the chock between tandem tires and expand it until the give between the wheels is gone. Expands up to 5-1/4" wide. Lowest Prices for the best wheel chocks from Ultra-Fab Products. Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide part number UF21-001060 can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (147)
  • Q & A (0)
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  • Why etrailer?

Ultra-Fab Products Wheel Chocks - UF21-001060

  • Trailer Wheel Chock
  • RV Wheel Chock
  • Wheel Chock
  • Wheel Stabilizer
  • Single Chock
  • Steel
  • Silver
  • Ultra-Fab Products

Rid your rig of the rocking with this easy-to-use, stabilizing wheel chock for dual-axle trailers and motor homes. Simply place the chock between tandem tires and expand it until the give between the wheels is gone. Expands up to 5-1/4" wide.


  • Wheel chock eliminates give between tandem-axle tires to prevent rocking when parked
  • E-Z grip handle provides excellent leverage and is lockable to deter theft
    • Padlock sold separately
  • Super-grip louvers on arms grip tire tread to prevent slipping
  • Heavy-gauge steel construction
  • Corrosion-resistant zinc plating


  • 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 a brake or wheel wedge.

Eliminate the annoying rocking of your trailer or RV no matter where you park it. The Chock and Lock braces 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 chock using the threaded rod and nut at the top of the unit. Simply place the 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.

21-001060 UltraFab Ultra-Deluxe Chock & Lock

Customer Reviews

Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide - UF21-001060

Average Customer Rating:  4.7 out of 5 stars   (147 Customer Reviews)

Rid your rig of the rocking with this easy-to-use, stabilizing wheel chock for dual-axle trailers and motor homes. Simply place the chock between tandem tires and expand it until the give between the wheels is gone. Expands up to 5-1/4" wide.


I purchased these last year and they are great. The trailer has much less wobble with these on the tires and they are still in great condition.


I have used these on my trailer for a few years and bought two sets for our kids for Christmas to use on their trailers. We all love them.


E trailer once again comes through with exactly what I needed. As usual delivered before expected.


Nice easy quick no specials wrenches using on food concessions trailer no rocking


Love these two chocks. Keeps my trailer very stable. I've had them for two years purchased from One had a piece of rivet break off and the company replaced it per their Lifetime Limited Warranty.

Still an excellent purchase despite that piece of rivet that broke off.
Gerry T - 09/30/2017


Seems to be well made and sturdy. I'm using this on a 21' trailer and notice no noticeable rocking with a single chock. This might be a little different with a longer trailer and different stabilizer jacks, so it's hard to say if it will work as well for every application. Overall, I'm happy with them.


Liked the design of this chock-n-lock. Had one prior but lost it while camping in OK. I bit difficult to get a padlock on it with the tandem wheels so close together. But, then that means it'll be more difficult for a thief to take a set of bolt-cutters to cut off the padlock. Fair trade-off.


we have been pleased with all the products we have ordered through etrailer. Unfortunately, in our case, many of these products including our trailer were lost in the Paradise Camp Fire. We still have the stabilizer, and if you look at our order history, we have started replacing some of the other items. My brother is new to owning a travel trailer and we have turned him onto e-trailer as well.


No instructions and watch out for your fingers while trying to adjust it. Once I figured the limiting nut, the wheel chock worked great. Easy to lock in, no wrench required.


Works as advertised, lightweight and keeps the trailer from rocking. I use on my you hauler and am very pleased.


Very easy to use and we felt more secure with our camper axles being locked in place. Make sure to measure tire gap as a larger clamp may be needed.


Great product, does the job

Working Great very happy with them
Rob R - 04/29/2015


Wheel locks are still working great. They are very fast and easy to use


Just installed it between the wheels and adjusted easily. I am sure it will work well. the lever installation is very convenient.


Great product


so glad we tried them. they worked great on our 33ft travel trailer.


Holds trailer firmly and is easy to adjust. No more "will it hold" pieces of firewood for me. Unit has not rusted even after a year outside.


Excellent product, does what it says it's going to do, makes the trailer very stable.


Only used it twice, but works great.


Order was exactly what I needed. It was delivered exceptionally fast and was accurate. Thanks !


We'll made. Picture made it look bigger than actual.


They do a fine job


Quick & easy setup, works as advertised.


Good quality, great price.


Review from a similar Chock and Lock in Wheel Chocks

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.

Show More Reviews

See what our Experts say about this Ultra-Fab Products Wheel Chocks

  • Compatibility of the Ultra-Fab Chock and Lock Wheel Stabilizers on Tandem Axle Trailer
    Since you are using blocks under the tires of your trailer when leveling, then the Ultra-Fab Chock and Lock Wheel Stabilizers, # UF21-001060, will work well for your application. The Ultra-Fab stabilizers will fit between the wheels of your axles and will eliminate the give between your axles. The chocks E-Z grip handle allows you to expand the stabilizer and can be lock using a pad lock to deter theft.
    view full answer...
  • Wheel Stop for 1-1/2" Spacing on Tandem-Axle Trailer or RV
    There is not a wheel stop for tandem axle trailers or RVs that will work with less than 1" but there is something close. The Ultra-Fab Chock and Lock Wheel Stabilizer # UF21-001060 works with wheel spacing from 1-1/2" to 5-1/4". Additionally, if you have a tandem-axle trailer or RV, you really want more than 1" of space between them in order to allow for the wheel to expand as you are traveling.
    view full answer...
  • Wheel Chock Recommendation for Launching a Boat
    On a slimy boat ramp there really aren't any traditional style wheel chocks I would feel comfortable recommending for you. If you have a tandem axle boat trailer I would recommend the # UF21-001060 as this installs between your tandem axle tires and will prevent the trailer from moving. See install video. Your best option would be to have at least one other person help you launch your boat. One to sit in the tow vehicle to cover the brake while the other launches the boat.
    view full answer...
  • Wheel Stabilizer For Tandem Axles That Fits 1-1/2 Inch Wheel Gap.
    We have what you need. I recommend the Ultra-Fab Chock and Lock. It will fit tire gaps from 1-1/2 inches up to 5-1/4 inches. Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers and RVs - Up to 5-1/4" Wide # UF21-001060. Make sure you select the quantity that you need when purchasing this item so you get the amount you need.
    view full answer...
  • Is Ultra-Fab Chock and Lock Wheel Stabilizer Sold in Pairs or Just 1 Chock
    If you were to order Ultra-Fab wheel chock # UF21-001060, you would receive 1 wheel chock. For a pair you can use part # UF21-001070. Having 2 will provide extra protection but using 1 is usually enough depending on your intended application. These chocks work well to prevent a trailer from rocking when parked. Having just one will reduce this rocking some but 2 will be ideal.
    view full answer...
  • Wheel Stop Style Chocks for Tandem Trailer with 1-1/2 inches Between Tires
    For a distance of 1-1/2 inches between the tires we have the Ultra-Fab Chock and Lock Wheel Stabilizer # UF21-001060 which would work great, the part # UF21-001091 you referenced has a minimum of 5-1/2 inches so it would not work.
    view full answer...
  • How to Determine the Correct Wheel Chock for a Keystone Bullet 281 bhs
    Most of the wheel chocks on the market are universal items and not trailer specific. To determine which Ultra-Fab Chock and Lock Wheel Stabilizer will work best for your Keystone Bullet 281 bhs, we will want to know the spacing between your tires (see photo). The Chock and Lock Wheel Stabilizer, # UF21-001060, will expand up to 5-1/4 inches wide and it is available as a two pack as part # UF21-001070. If your tires are further apart, then you could use the Chock and Lock Wheel Stabilizer,...
    view full answer...
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  • Is Lippert 5th Wheel Ground Control 3.0 Power Leveling Kit a good fit for Heartland Torque 325TQ
    Your 5th wheel trailer is on the large side at about 40 feet long and 8-1/2 feet wide with some slide-outs. The 4 point system # LC358590 would work well and give you stability that you are looking for, especially side to side stability. I think that you will be very happy with the added stability and amount of control the Lippert Ground Control 3.0 Electric 5th Wheel RV Leveling System will provide. As it comes it will fit 8, 10, or 12 inch frames. For even more front to back stability...
    view full answer...
  • Will JT's Strong Arm Stabilizer LC191025 Fit A 2021 Grand Design Transcend Xplor W/ Angled Jacks?
    It is possible that the JT's Strong Arm Jack Stabilizer Kit for Travel Trailers # LC191025 will work with your angled scissor jacks but only if there is a crossmember rearward of the rear jacks at a minimum of 4” to a maximum of 18”, and locate a cross-member or center compartment with a steel floor from 6”-18” from front of front jacks. If you do not have a crossmember in these locations the best option would be to use the Ultra-Fab Chock and Lock Wheel Stabilizer for Tandem-Axle Trailers...
    view full answer...
  • Wheel Chock and Stabilizer for Tandem Axle Trailer with 2 Inch Gap Between Front and Rear Tires
    The 2 inch spacing you have between the front and rear tires is enough to use Ultra-Fab chock # UF21-001060. It will fit tire spacing of 1-1/2 to 5-1/4 inches. I have included a link to a video review for you. For a set of 2 use # UF21-001070. You can also add a lock to the chock using # RM-301.
    view full answer...
  • How Many Wheel Chocks Should be Used
    We recommend using 2 of the Ultra-Fab Chock and Lock Wheel Stabilizer # UF21-001060 when your trailer is parked as that will keep it more stable on both sides. You can find a kit of 2 with part # UF21-001070. Please note that you also need to add the chocks like the FloTool Wheel Chocks # FT11930MI on the outsides of your trailer tires to limit the movement of your trailer.
    view full answer...
  • Availability of Lockable Wheel Chock for Trailer
    We have a similar wheel chock to the # SC47MR that is lockable with the Ultra Fab Wheel Chock and Lock part # UF21-001060 that allows you to run a padlock through to lock it in place as a theft deterrent but the # SC47MR is not lockable.
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Dustin K
Video by:
Dustin K
Employee Zach D
Video by:
Zach D
Employee Cole B
Installed by:
Cole B
Employee Shane T
Installed by:
Shane T
Employee Randy B
Installed by:
Randy B
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Halie H
Updated by:
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