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Ultra-Fab Stackable Stabilizers for Small Trailers and Campers - 6,000 lbs - Qty 4

Ultra-Fab Stackable Stabilizers for Small Trailers and Campers - 6,000 lbs - Qty 4

Item # UF48-979004
Our Price: $61.02
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These unique jacks extend from 11" to 17" and support up to 6,000 lbs each. Stackable design means that they take up less space when stored. For stabilizing only - do not use for lifting. 1-636-306-4830 to order Ultra-Fab Products camper jacks part number UF48-979004 or order online at Free expert support on all Ultra-Fab Products products. Guaranteed Lowest Price and Fastest Shipping for Ultra-Fab Stackable Stabilizers for Small Trailers and Campers - 6,000 lbs - Qty 4. Camper Jacks reviews from real customers.
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Ultra-Fab Products Camper Jacks - UF48-979004

  • Stabilizer Jack
  • Slide-Out Supports
  • 5001 - 6000 lbs
  • 17 Inch Lift
  • 4 Jacks
  • Ultra-Fab Products

These unique jacks extend from 11" to 17" and support up to 6,000 lbs each. Stackable design means that they take up less space when stored. For stabilizing only - do not use for lifting.


  • Stabilizers help support your small trailer or camper when it is parked
    • Do not use for lifting
  • Stackable design minimizes required storage space
  • Simple setup
    • Place beneath trailer and extend up by turning handle until threaded extension is raised to appropriate height
  • Die-cast aluminum construction is strong, sturdy and rustproof


  • Weight capacity: 6,000 lbs per stabilizer
  • Height adjustment: 11" - 17"
  • Quantity: 4 jacks
  • Lifetime warranty

48-979004 UltraFab Stacker Jacks - 4 Pack

Video of Ultra-Fab Stackable Stabilizers for Small Trailers and Campers - 6,000 lbs - Qty 4

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

Video Transcript for Ultra-Fab Small Trailers and Campers Stackable Stabilizers Review

What's up everybody It's AJ with Today, we're gonna be checking out these stacking stabilizers from Ultra-Fab. Now these are gonna come in a kit of four or two, depending on what you need, and what you can use them for is we've got them put underneath our enclosed trailer today, and that's just gonna help stabilize it. Now it's not lifting it up off the ground, but they're there and tightened up to the bottom of the trailer so that I can walk around, back and forth inside. And there's not gonna be side to side or front to back movement. It really does work and stabilizes everything.

That way, it's just a little safer while you're in there messing with it. Let's check it out. Just goes all the way up here to the frame and acts as a kind of a stand. So again, it's not lifting this up. This isn't a floor jack or anything like that.

This is a stabilizer. So, you tighten it up to the bottom of the frame, just enough to stabilize everything underneath. So we've got two up front and two on the back, and it's gonna allow me to walk around in there and not have the trailer shift back and forth on me. Now let's test it out. We're gonna remove the stabilizers and we're gonna show you how much the trailer moves back and forth without them.

So we're gonna get an outside shot. And then later on, we're gonna show you the inside. But right now I'm just gonna walk in there and go back and forth, and you're gonna see the trailer move a whole bunch. So I'm just kind of shaking it with my feet right now. You should see it moving side to side.

It's pretty easy to do. Not to mention walking side to side in the trailer. That just moves it back and forth. And then hopping from side to side, definitely moves it back and forth. Now that we're inside, we went and set up a level just to further show you how much movement there is. Now camera man Aiden's in here with me. So the camera is gonna get a little shaky, but you'll at least be able to see the side to side movement on that level. And how much just walking around and jumping around in the trailer moves that level. Now we've got the stabilizers set back up on our enclosed trailer. I'm gonna go back inside and show you how much it does not move anymore. So we've got two on the front and two on the back. I'm just gonna hop in, kind of walk around like I did before. You probably aren't seeing much out there because I'm definitely not feeling much as I walk around. It feels way more sturdy and I'm just walking around right now. I'm not jumping yet. But then I'll jump back and forth. I'm looking at the level while I'm in here. That bubble is barely even moving, even when I jump around. So that just shows that they are actually working. Back inside, just want to show you the level. So I'm just gonna walk around again, and then I'll start to jump back and forth here in a second. You see, as I'm walking around the trailer, that bubble's barely moving. So now I'll kind of hop back and forth. Might be moving just a little bit, but I just don't feel it at all on the floor as I'm going back and forth. And so that bubble's not moving that much at all. Once again, I'm just gonna kind of walk around all over here, just to show you there might be slight movement, but it feels so much more sturdy. This way I can walk around. There's not any movement. And I'll kind of hop back and forth. You're not seeing much movement at all. This is a great option if you have a work trailer. So we have our enclosed trailer. If you we're to pull this up on your job site and you have people coming in and out of it all day, not to mention hauling heavy equipment out, that's gonna make it shift back and forth, and where it's not gonna fall over or anything, but it's so much better with those stablers on there. So let's say you're pulling out a big old generator. It's not gonna add that more movement back and forth as you're moving that around inside here. You can just get it out of here and it's not gonna shift things around. Now we're at our camper. We went ahead and installed it on here. There's some different things going on with a camper. Most of the time there's people walking around back and forth inside. You might have pets or even kiddos running around. It's gonna be lot of side to side movement. And you want to kind of help stabilize that. Most new campers already have scissor jacks installed on them like this. So then you wouldn't need the stabilizer here. But some older campers don't have them on there. So then you have a choice you can make. You can go with some scissor jacks or stabilizers. I'm gonna kind of just go over some pros and cons real quick of both of them. The scissor jack's nice because it's already gonna be here in place at the bottom of your camper. So all you have to do is get the tool out of the basement door and lower them that way. Now you could get automatic ones too, where you can push a button and it lowers them. Or that's gonna require, that goes into installation. So with installing these, you're gonna have to drill into the frame for some of them. You might have to weld, so you're gonna need a welder. Or if you're doing the automatic ones, you're gonna have to run some wires back and forth to get it to be that push button. That's not something you're comfortable with or not something you want to invest in, you can go this route instead. It's far easier to install this. You just run, turn the screw. And the bolt goes up here and holds or pushes up against the frame, sorry. And that's how it stables that there. And then when you're done, you just mainly go all the way back down with it. And they're also gonna store inside of each other. So it'll only probably take up about that much space with them all collapsed inside each other. So it's not that much more room than the tool that you've used in the basement. I know that one's probably more like a rod, but this one's gonna be a little bigger like this. So that's gonna fit in your basement, but you're gonna have to have the space for it. I get it, but it's not that bad. So between both of them you have to make those choices. Now, it also depends on is your camper a bigger camper Then I probably wouldn't go with the stabilizer here. The bigger the camper, the more stabilization it's gonna need. So I'd probably go with the scissor jack, especially 'cause you can add onto them with different accessories, like crossbars that go across there and really take that side to side out. And a more permanent installation is probably best for something that big. One limiting factor may be height though. Just in case your trailer or your camper sits up a little high. This can only adjust from all the way, being all the way down would be 11 inches, and fully extended would be 17 inches. So that's how much you have to work with here. I just want you to keep that in mind, maybe check out how low your trailer sits to be level before you decide if you're gonna go with this or not. This is what you're gonna get with the kit. So there's gonna be four of these. It's gonna be the stand and this is gonna be the pole. You just put through here. You see it's got a cutout for the nut there, and that's what it's gonna go fit down into. That way it holds the nut in place as you turn this, and it either extends or retracts the bolt. You have the handle here. That just goes in the side. Fits in there. And it's got a little indention there. So that's how it catches. And you can easily turn it to again, raise or lower it. So, that being said, we can loosen this up and slide it underneath the trailer. You want to make sure it pushes up against the frame. Now you don't have to turn it a whole bunch when you're doing it. Just a little bit, because again, it's not lifting the trailer up. It just using it for the trailer to sit down on to stabilize. So let's come back through here. Looks like we're going right about here. A little more towards the inside. Try and match the one on the other side. And I'll start turning it with my hand this way. You really could probably start using a level, sorry, the handle. Once it makes contact and gets a little harder to turn, you're gonna need that. So right about there, you see it got a little harder for me to turn my hand, and we're gonna make sure we just get a couple more turns on there, so it gets tight. But not too much 'cause again, not lifting it up. So that seems about right there. I can give it a nice shake. You see it's not moving or going anywhere. And the stabilizer's set. Now the overall construction of our stabilizers is gonna be aluminum. So it's gonna hold up to the elements just fine. It's not gonna rust or corrode. And it's gonna have a weight rating of 6,000 pounds per stabilizer. So that just means, most likely it'd be fine on most trailers, just because all that weight. You're not gonna have 6,000 pounds just coming down on this side. It's gonna be 6,000 per each one of the stabilizers. And since we have four on here, that's gonna be more than enough just to make sure and keep this thing level. Another good thing about them being aluminum is that they're super lightweight. I was really surprised at how light they are. You can do it one handed, not a big deal. I guess I was lumping them in with the category of those floor jacks, kinda like we talked about earlier. Those are usually heavier, bulkier. You kinda have to lug them around. This is very small. It's more compact with it all fit into each other like we showed you too, all four of them here with the bolts in the middle, and can easily fit in our basement door. No big deal. Just wanted to show you how it does fit in there really nicely, 'cause obviously there's plenty of room in a utility trailer to put them on any of those shelves, but basement door, fits right in there with room to spare. Well, I think that about does it. Thanks for hanging out..

Customer Satisfaction Score:

Customer Reviews

Ultra-Fab Stackable Stabilizers for Small Trailers and Campers - 6,000 lbs - Qty 4 - UF48-979004

Average Customer Rating:  4.7 out of 5 stars   (277 Customer Reviews)

These unique jacks extend from 11" to 17" and support up to 6,000 lbs each. Stackable design means that they take up less space when stored. For stabilizing only - do not use for lifting.


These Jack's made both building and positioning my teardrop onto the trailer bed easier. At campsites they easily level the trailer. So yes I'm happy.

They are holding up just fine and doing their job both at campsites and at home.
Robert E - 06/08/2020


I use these jacks to stabilize my trailer especially when loading/unloading heavy yard equipment; they keep everything rock solid. I also use them when parking a loaded trailer overnight to spread the load. Delivery was quick; packaging was perfect and service was first class.


we are using these stabilizers for supporting our offloaded truck camper (adventurer 910db) where we reside full-time ... they are very easy to use, provide excellent support for the truck camper and have eliminated 98% of wobble ... the support structure includes jack pads, e-trailer stabilizer, 2x6 pressure treated lumber, 4x8 3/4 inch pressure treated plywood


I purchased 2 sets of these to level my 1965 Ford F100 truck frame for preparation of installing a Crown Vic front suspension and a Lincoln Mark 8 Independent Rear Suspension. The light weight and adjustment of these made them ideal for my project.


They work great


I agree great product at great price. Used them to strengthen and support my deck. Worked awesome, easy to use.

Great..even through a huuugge snow
Bridget H - 03/24/2019


I use these stands for extra support under my 9.5' Lance camper off the truck with the jacks down in combination with 2 4x4's. Seem to work fine in that situation. Don't think I'd trust them alone.

Everything still working great!
James - 04/08/2019


Very happy with the trailer jacks - they’ve kept our 1966 airstream sitting solid on a bed of gravel for a year now


I ordered a cab over camper corner leg, jack. Today they followed up w me! Amazing service then and now. The jack continued to work great. I'm about to order a trailer hitch for my '20 Ford Escape


Simple lightweight Stabilizers. I use them to lower my truck camper onto a simple wooden rack that I built to sit upon the jacks. I get the Truck camper lowered until about an inch or so from where I want it to rest then put the wooden rack and these Jack under it. I adjust the jacks until they are firm against the bottom of the truck camper then lower the truck camper down about another inch so some of the load is on the bottom of the truck camper instead of just the 4 legs. having the bottom supported the camper is also more stable and I have heard it extends the life of the floor. Most people seem to lower theirs onto saw horses but I found that keeps the camper higher in the air than I would like and having the 4 jacks to compensate for the uneven ground is a plus.


I bought the stands to level out my smoker that sits on an uneven pad. There is a water pan inside so being level is important. They have exceeded my expectations!
Thanks for a great product, as advertised


These jacks are going to work great on my camper. They fit my requirements of small, lightweight and compact. I am building a camping trailer, very lightweight, with the box holding my camp kitchen and other gear and a platform hard shell tent above. The tent deploys out over the tongue so I went with the 4 pack as the trailer will not be left attached to the tow vehicle while camping


I recieved the stabliizers in new condition. Just watched the video and they seem to be easy to use. We plan to stablize our travel trailer when we go camping, just using the built in stablizers let the trailer rock when we would walk around inside. I hope to make the floor solid with these. Will be trying them soon. We tried hydrolic bottle jacks but they loose presure in a short time


Hi George,

Sorry I didn't get
back to you until today, but I do have a good reason, We were camping. As soon as we got the camper unloaded, I opened the jack box and only 4 4 x 6 boards ( out of my box of 12 we used to carry with us, but not any more ) I had the whole camper stable in less than 20 min. Great product, I will let all my fellow campers Know about these jacks. They also don't take up as muck room or weigh as muck as the car jack stands we used to use!

Thanks again.


Purchased in hopes that the trailer would have less wobble when walking around inside. Did not help. Otherwise seem to be ok. Tried them out, wasn’t happy and threw them in the trailer storage. Have not used them or seen them since.

There are few ways to stabilize your trailer while you are walking around on the inside. The most popular way is scissor jacks that bolt to the bottom of the trailer frame to reduce movement such as part # JSC-24-IND
Leveling Scissor Jack - 24" Lift - 5,000 lbs
. This leveling scissor jack handles up to 5,000 lbs and has 24 inches of lift. Another option if you have a 5th wheel or gooseneck trailer is a tripod stabilizer. If the trailer is a gooseneck trailer the ultrafab tripod stabilizer part # UF19-950400
Ultra-Fab Gooseneck Trailer Tripod Stabilizer - Aluminum - 33" to 43" - 1,200 lbs
attaches to gooseneck connection of the trailer and holds it steady to eliminate front-to-back and side-to-side motion of unhitched trailer or RV. If the trailer has a kingpin ultra fab tripod stabilizer part # UF19-950001
Ultra-Fab 5th Wheel King Pin Tripod Stabilizer - Steel - 37" to 50" - 5,000 lbs
will hold the kingpin steady to prevent movement when parked. To add extra support you can also add super grip wheel chocks part # UF21-001091
Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs - Qty 2
to prevent rocking when parked.
-- Etrailer Expert Heather A - 11/29/2018


During my tiny home trailer build I used the stabilizers to level the flatbed trailer the tiny home is sitting on. Two old tires on the same side went flat. The stabilizers did not care.


These are a simple and inexpensive solution to the bouncing problem I have in my Mallard M325. I found that by putting the auto stabilizers down, it actually made the frame curve upward in the front and rear, thus leaving a lot of weight on the springs and tires. By adding these jacks forward and behind the springs, it solved our "bounce" problem.
I have to say, I love dealing with The communication is great on the orders and shipping.
Thank you George.


I used jacks similar to these in the late 60's and early 70's. Glad to see they are still on the market. I purchased a 1976 Scotty Highlander and it is in process of being restored. These jacks are very satisfactory on a smaller trailer. I also got prompt delivery from this company. Price was very reasonable as people who have used jacks are about in the same range as these new jacks. Very glad they are stackable as they will take up very little room when in storage. Be glad when trailer is fully restored so I can start using my jacks.


They work great for the price. They stack easily for storage and do a good job holding it once its leveled.


Love these little jacks for my 1966 RoadRunner! Super lightweight and stackable!!!
Reasonably priced. One in each corner of my camper keeps it stable with very little movement when I walk around the camper. I put hard plastic squares under the jacks when I'm on soft ground.


After one year, I can only
distantly remember my plight with the problem of leveling my 1500 dodge (light rig) with the 30 ft. travel trailer. Your simple, most economic solution (and I did it myself in 15 min.) by adding the rubber supports to the rear suspension makes me the straightest shooter on the road, thanks! Ken


I got these in the mail super fast. I had ordered them and was not expecting to have them before I headed out camping a week after ordering them, they were in my hands in three days which was awesome. I was looking for an affordable alternative to scissor jacks and these are them. These jacks are really compact easy to use and store. I have been doing a major rebuild of my trailer and have not had proper stabilization, but these made the trailer very solid. I like the wide base on them, we were set up in an area where the ground was soft and these did not dig in or sink at all. Easy to adjust and set up. These are a great option for stabilization, planning on buying a couple more for additional support along the sides.


I used these jacks under a 6x12 box trailer that I use as a jobsite shop and tool storage. I've owned a lot of trailers, and consequently jacks. These are among the nicest I've seen. Make sure the size is appropriate for your trailer.


They are light and handy, but you had better be pretty strong if you have to bring the trailer up very much on any one corner. For the price, it's a great buy.

Thanks for the follow up email. The products work fine, although I admit that we have not had as many opportunities to use the jacks as much as we would like. We?ve only done two trips with the trailer since it is a vintage Kenskill in need of some work. It?s roadworthy, but could really use some help.
Abe - 11/17/2014


Well pleased with the Stackable Stabilizers. Got what I ordered and appreciate being notified through out the delivery process. Many thanks etrailer.

I got these specifically for boondocking with my Truck Camper. I do not use them much, but when I do, they work well.
Wayne E - 02/15/2018

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  • How to Determine if a Torsion Axle Needs to be Replaced and Lifting a Trailer Off the Ground
    It is certainly possible for any axle to wear out enough over time to need replacing. Since the suspension is built into a torsion axle if the suspension part was to wear out pretty much the only solution would be to replace the axle. If the deflection, or amount of travel of the wheels, on the torsion axle has increased, caused the trailer to bottom out, or is not the same on each side then that would be a good indication that something is wrong. Having the weight off of the tires if...
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  • Recommended Scissor Jack for Boat Trailer
    We do have a nice selection of scissor jacks available like the Ram # TJSC-24 that you referenced, however none of them feature an aluminum or stainless steel construction. These scissor jacks do have a black powder coated finish though that will do a really nice job of resisting corrosion. They have a weight capacity of 2,500 pounds and will work well for your application to add stability to your parked trailer. Another potential option is the Ultra-Fab Stackable Stabilizers # UF48-979004....
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