View Cart
Ultra-Fab Power Twin II Manual Stabilizer for Trailers and RVs - 30" Lift - 6,000 lbs

Ultra-Fab Power Twin II Manual Stabilizer for Trailers and RVs - 30" Lift - 6,000 lbs

Item # UF39-941704

lowest price pledge

Retail:$576.40

Our Price: $554.92

You Save: $21.48
Camper Jack

This item qualifies for Free Shipping

Shipping Weight: 120 lbs

Quantity: 
In Stock, Ships Today
UF39-941704 - 6000 lbs Ultra-Fab Products Camper Jack
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images


  • Stabilizer Jack
  • Manual Stabilizer
  • 6000 lbs
  • Ultra-Fab Products
  • 30 Inch Lift
Stabilize and level your travel or 5th-wheel trailer with this unique device. Designed to span the width of your rig for maximum support, the opposing sides of this stabilizer can be adjusted independently for effective leveling. Call 800-298-8924 to order Ultra-Fab Products camper jack part number UF39-941704 or order online at etrailer.com. Free expert support on all Ultra-Fab Products products. Guaranteed Lowest Price and Fastest Shipping for Ultra-Fab Power Twin II Manual Stabilizer for Trailers and RVs - 30" Lift - 6,000 lbs. Camper Jack reviews from real customers.


  • All Info
  • Reviews (52)
  • Q & A (21)
  • Photos
  • Why etrailer?

Ultra-Fab Products Camper Jack - UF39-941704

Stabilize and level your travel or 5th-wheel trailer with this unique device. Designed to span the width of your rig for maximum support, the opposing sides of this stabilizer can be adjusted independently for effective leveling.


Features:

  • Cross-frame-mount jack stops front-to-back and side-to-side motion of travel or 5th-wheel trailer
    • Provides support across the width of your motor home or trailer
      • Not recommended for use on front of motorized vehicle
    • Stabilizes with wide side support brackets
  • Connecting bracket holds sides of stabilizer together and provides additional support
    • Adjusts to fit the width of your trailer or RV
  • Extra-large footplates help to minimize sinking and tilting
  • Hand crank attaches for manual operation
  • Sturdy steel construction


Specs:

  • Application: trailers and RVs with frames from 48" to 80" wide
  • Lift: 30"
  • Weight capacity: 6,000 lbs
  • 3-Year warranty


39-941704 UltraFab PT II Manual Stabilizer



UF39-941704 Installation InstructionsInstallation Details UF39-941704 Installation instructions




Customer Reviews

Ultra-Fab Power Twin II Manual Stabilizer for Trailers and RVs - 30" Lift - 6,000 lbs - UF39-941704

Average Customer Rating:  4.6 out of 5 stars   (52 Customer Reviews)

Stabilize and level your travel or 5th-wheel trailer with this unique device. Designed to span the width of your rig for maximum support, the opposing sides of this stabilizer can be adjusted independently for effective leveling.

- UF39-941704
by:

Product was delivered on time, no problem with assembly I do wish the instructions where larger but went on line and printed it off, well built no problem on install good product 310907



- UF39-941704
by:

Very happy with the quality of this stabilizer jack!! I currently only have the jack installed on one end of our toy hauler and you can feel the difference in how stable the camper is on one end compared to the other end that still has the scissor type jacks. I will definitely be purchasing a second one!! 280015


Comments

I did end up purchasing a second set of these stabilizer jacks a few weeks later and Im very happy I did!!

Brian s - 08/05/2017

26854

- UF39-941704
by:

This product is awesome and has made a substantial difference in the stability of our camper! We have a 32' travel trailer and the factory jacks are sad and could feel every movement of the kids. This has taken away 90% of the movement that we were having before. If you are not handy plan on having someone install this for you. It's not hard to do but if you don't have some tools for the job you will struggle. It took about 4 hours total to install. 529220



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Your going to love this product. I was able to fit on to a 1987 Avion travel trailer I renovated for my sister (spectacular renovation). It made the camper rock solid. You can't feel anybody walking around, no high wind movement. It felt like we set it on a concrete foundation. It is a well designed product I will use in the future if I renovate another classic beauty, even my own every day travel trailer. Great product. 614891



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I love this product, I wish I'd bought and installed it sooner. It took some installing, you might need to solicit help from a friend unless you're stubborn like me, in which case it's doable solo. The wiring is the most challenging, I found adding a dedicated circuit directly from my battery via a heavy duty fuse was the way to go. The function and performance is flawless and makes leveling at the campground or storage location child's play. 655786



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I Love these Electric Stabilizers, They work Great. They Make setting up and taking down, so much easier. The Duel Motors have plenty of Power and give you complete control of leveling both Sides Independently. The only Negative is the Glass fuse style Fuse Holders that come with them, They work intermittently at Best. Replace with the Blade Style Fuse Holders. Much Better. 607721



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


the power rear jacks work great. 478968


Comments

great product

RON W - 03/10/2019

50347

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


On time. Installed easily! One of the bolts that attach the motor did twist off before it was tight. All bolts turned hard. 371795



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Product arrived very fast and looks very good I have not installed it yet Great company to deal with 298117



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


On a nice sunny day I pulled out my new Power twin Stabilizer set. The Ultra-Fab went together as the direction read. The sizing to the trailer frame was a bit of taking a part to slide together as it is a very tight fit. I was replacing a cheaper set put on by the trailer MFG. adding spacer to fill in for the longer and better frame work of the Ultra- fab Stabilizer. The power units went on without any fuss. I am very pleased with my handy work the ease of installation. etrailer was great support when I thought a part was missing in shipping. All parts were in the boxes when I open them all up. Thank you etrailer 189206



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Best investment we've made for our 5th wheel--eliminated a lot of the shaking and makes our camp stays so much more enjoyable. I wish we had done it sooner. 499148



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Was subpar can’t lift trailer doesn’t do a very good job at stability would not purchase if I knew what they were like 598066


Comments

The ultra fab stabilizer part # UF39-941705 is not designed to lift. If you are looking for a stabilization system that can also lift the trailer I recommend lippert Travel Trailer Leveling System part # LC672136
Electric Ground Control TT Automatic 5-Point Travel Trailer Leveling System - 10,000 lbs
$2,264.38
. 5 motorized jacks will lift the trailer and level it with a fully electric system. The system can be operated by the included control panel or with your smart device. The best thing about the lippert leveling system is that it includes hitch height memory for automatic leveling when you are ready to hook up again.

-- Heather A - 01/17/2019

48647

- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The product itself is a good product but the packaging for shipment is very bad. I received mine and the box was badly torn apart and tapped back together. I was missing multiple pieces and had to wait until the replacement pieces arrived. Customer service was very helpful with resolving this problem within minutes. 119770



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The Jacks are considerably more durable well built compared to the Lippert models. The lifting power is real and once on the ground the prevent movement of the RV by orders of magnitude over the other style jacks. I only have one in the center of a long trailer and it has stopped the bouncing and side to side swaying of the trailer. Just stepping onto the stairs to get in its rock solid. Also when all the legs are deployed the doors close way better than they ever had with just the Lippert jacks on the front and back. Definitely recommend to anyone thinking about a better jack than what's provided oem. 307523



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Very well built system! My favorite feature is the independent toggles for each side, thus adjusting the angles to your needs. 408281



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Installation was easy, need a helper just to make it safer. CSR people are great very helpful!! Works as promoted and I have recommended this product to other campers. 410247


Comments

Well after 1 year of use the Jacks are still doing very well we have gone on at least a dozen trips that they have been utilized. I am very glad to have purchase them, the installation was very easy great videos!! Best Regards P.S I have recommended to other campers and have even assisted on installing them.

James F - 07/26/2018

41519

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Very please with my purchase, it was simple to install and has solved the bounce issue in my 36' travel trailer. 381969


Comments

Working perfectly, very please with the stabilizers and the finish, they still look new with no rust

Jim P - 05/18/2018

38633

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The Ultra-Fab Power Twin II is a very robust stabilizer and works very well with the two heavy duty twin motor Ultra-Fab landing gear jacks I had previously installed on the front of our 32' fifth wheel. I like this product for it's strength and simplicity. It allows leveling and stabilizing without hand cranking or getting down on knees with a cordless drill and socket. I performed the complete assembly and install myself which replaced the two scissor jacks that came on the fifth wheel. This unit makes for a very stable platform. 291096



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Scary at first, but following directions, it bolted right onto the frame, used a floor jack to hold it in place while attaching. Wiring was uncomplicated, except for figuring out where to route the wires. works fine, I am a happy camper! 340760


Comments

still works great.

Glenn A - 02/10/2018

34539

- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I got the jack for three reasons. My original jack was intermittent, it was bent and it did not level the trailer because it had only one motor. The new jack works great and it can level the trailer because it has two motors and the power required. It was not the easiest to install because of the increased size and it will not level the trailer if it is off more that 2 inches or so side to side. In spite of these drawbacks and the fact it added weight to the rear of the trailer I am very happy with the new jack. 372285


Comments

Good. Only issue I have is it is slower than my old jack

Richard - 04/25/2018

37656

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The product arrived as ordered and the customer service was good. Note you must supply your own 3/8 inch bolts or self tapper screws to install as they are not supplied. 172645



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Ultra- Fab did a great job with this product. Extra heavy duty and a easy install. Very good quality mounting hardware included. Nothing else needed for installation. This system makes setting up at the camp site a breeze. If you are looking for a stabilizer leveler system your search is over. etrailer.com could not have done a better job. A great web site and fast shipping. Keep up the good work. 173391



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Quick follow up after a year or so of use on the Twill ll Electric Stabilizers. I have one set on rear and one set on front of my 28' Coach. I have found that it is better to use a solid piece of 12"x12" hard wood for the feet to rest on while setting up the camper at site. the plastic ones seem to push in after a bit and I have to re-adjust. As far as the Jacks are concerned, they perform as they should, making the coach very solid with little to no movement. I have had 0 issue's with them since I installed. Not a super easy task by yourself in your driveway but not that hard either. just take your time, run heavy gauge wire for power so no drop in amp. all good! thanks, 445259



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Little intimidating at first, just took my time and it went together without any major problem. The problem that I had was dealt with quickly. It's solid and well built. Print on the instructions was a little small for my eyes. Having the instructions on line was a great help. 324280



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I finished the assembly and install of the power twin II stabilizer and have included pictures of the install. This is a good quality unit and I am very happy with how it works. Bob 291792



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Very pleased. Not that hard to install. These replace the weak stabilizers that came with the trailer. You'll need a jack and an electrical kit to complete the install. 433546


Comments

Still working just fine, Ive suggested it to anyone who askes about it.

RRR - 09/18/2018

43732

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Finally got around to installing my PT II Stabilizers 30" front and rear of our 26' Surveyor. Pre - assembled them to make sure they went together ok. Luckily I had two sources for power front & rear which made wiring easy, I used a Buss block to make all positive connections, grounds straight to frame, soldered all connections and heat srinked to seal. Using the 3/8" self tappers was fun.Well got it all together and all works well makes trailer very stable, don't have to worry about scissor jacks collapsing anymore. 422980


Comments

Working well they make our trailer very stable compared to the sizzor jacks that came on our trailer well worth the money. Install was easy and had them spot welded to frame.

Chuck - 09/18/2018

43707

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I want to give this product 5 stars as they are a very nice set of stabilizer jacks that are very heavy duty but I'd have to say that the quality control from Ultra Fab is not great. The connecting bracket, part # 39-841642 on both sets was very poorly fabricated. On one set the holes were not drilled in a straight line and therefor did not line up with the holes on the jacks forcing me to drill new holes and on the other set the bracket was actually a whole quarter of an inch narrower at one end than the other and the jacks did not even fit into the bracket. Due to time constraints and not being able to be down more than a day after cutting off the old jacks I was forced to cut the bracket and weld it back together straight so that it was usable. Costing me an extra 2 hours of time and frustration. Nice jacks otherwise but I advise to assemble them completely and make sure the parts line up before removing your old parts. 662077



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


After installation the stability or my toy hauler was increased X3. The installation was relatively easy and all that was needed was common tools and a floor jack. Wiring was covered by simple easy to follow instruction. Some shrink wrap and a solder gun make permanent water resistant connections which I recommend. 653355



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I received the leveller/stabilizer as expected. The instructions for installation were clear and I found it easy to assemble and install them. Wiring was a bit tricky because of my trailer design, but worked out fine in the end. I have just returned from a three week trip and can recommend this product whole heartedly. One thought I have had is that a manual version might be satisfactory, using a drill to drive the gears until they engage with the ground, and then using a manual crank after that. The motors are a bit slow to drop the feet to the ground because they also have the necessary torque and gear ratios to lift the corner of the trailer. All in all, a great product. 647307



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The stabilizer was a great purchase. It has lived up to it’s description as advertised. I did have to make some alterations. Because I have a slide out carrying rack on my 2010 Cougar 5th wheel, I had to weld the stabilizer to the frame so I could use the slide out rack. It works great. I highly recommend the product. 613986



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


The Jack's came really boxed up well. They came in 3 boxes. Assembly was really not a difficult task. I built them in my driveway and slid the right under the camper. I do recommend that you get a real good measurement of your trailer frame (outside to outside) before putting under trailer. That way you not crawling under your trailer 10 times to move adjusting bolts TRUST ME ON THIS ONE! These Jack's are really heavy duty. Must say they are a very well made. Better then the stuff new trailers are coming with off the lots. 608834



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


1 bad switch but very good product 523885



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Nice product. Shipping was fast and communications were good. Heavy duty stabilizers, I'm sure they will be more stable than the old scissor jacks. The only problem I had was the one ear was broken off of the one switch. Does not effect function but when you buy something new you expect it to be right. 523701


Comments

Works good no problems

Ken T - 06/19/2019

56816

- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


i find these easy to operate. installation took a little time as i had to works underneath the camper. i have discovered, the middle of the jacks flex when leveling. i have some heavy angle iron, i am going to reinforce them. before i do that operation, i am going to add more bolts, that may be the simple solution. overall, excellent product. 481698



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Thanks for all your help. Everything went great. 458099



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Awesome product!!! Heavy Duty compared to what came on my Grand Design that bent!!! Only one downside is that when it was shipped a nut and bolt package was left out. Called manufacturer and they shipped 2 day ups to me. Other than that great product. 441231



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Order 2 one for front and one for rear of my pull behind camper. Love them. 432009



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Everything good so far I have one question when I attach the jack to my frame of my camper the direction show 3/8 Bolt but should I use a bigger one like a 1/2 ? 420342



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Easy install 358247



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Great product great instructions nothing missing. Thanks 302582



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Great service 290947



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I can not say how great these operate. Not difficult to install at all. Great product. I installed these on a 31' Forrest river travel trailer. Set up time from start to finish is now less than 5 minutes, no sweat or frustration required. I should have done this year's ago. Well worth the investment. 256228



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I purchased 4 sets of these for 2 trailers. One motor intermittently will not run unless I remove the cover and turn it by hand. It occurred immediately after installation. Should have returned it. 249800



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Package received mostly in tack. Heavy stuff could use better packing. Product came together just like instructions say. Put wiring per instructions and inserted fuses. Turned the switches on and up she went. I will love it. No more manual leveling. The heavier 6,000 lb lift will be better for my fifth wheel 35 foot challenger. When it is up you can't tell it's even there. Mine is the twin 11 stabilizer with dual motors. 243048



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


this is a great co. 226093



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I was very satisfied with the excellent service I received. Rose was very helpful. Box was a little tattered but all parts were intact. I installed stabilizers and they work as expected .Very easy to install as I did them myself 194823


Comments

They are working great just as u expected very good product. Would recommend to anyone. Thanks Again to Rose for her help

Joe - 05/27/2016

18061

- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


worm gear drive is bent a little but I think it will be ok If not is warrantied for 3 years. Service from Etrailer very good as always 179535



- UF39-941705
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


I have not installed them on my travel trailer yet. It is buried in 5 feet of snow. Once it warms up and the snow melts (I hope before summer) I will install them and review them on how they function and how I did on installing them. Shipping was fast and the boxes came intact and packaged securely. 177165



- UF39-941707
by:

Review from a similar Ultra-Fab Products Power Twin II in Camper Jack


Exact replacement of what was on the Carrilite 5'er with both products, the levelers and the front landing gear. Fast efficient service as usual! 172136


66
68
Show More Reviews

Ask the Experts about this Ultra-Fab Products Camper Jack
Do you have a question about this Camper Jack?



Do you have a question about this Camper Jack?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality camper jack for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate camper jack information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Photos by:
Theodore B
Written by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Jeffrey L
Updated by:
Sarah W
Updated by:
Halie H
Updated by:
Isabelle B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!

Call 800-298-8924