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Ultimate Trailer Jack - Sidewind - 15-1/2" Lift - 1,500 lbs
Ultimate Jack

Ultimate Trailer Jack - Sidewind - 15-1/2" Lift - 1,500 lbs

Part Number: UJ44FR
In Stock
$99.90
Retail:$125.32
You Save: 20%
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Product Images

In Use/Installed

Just pull the easy-to-access pin on this jack to drop the entire jack tube down for quick, easy adjustment. No drop leg needed. Seven height settings offer up to 12" of drop. Sidewind handle allows for an additional 15-1/2" of lift. Great Prices for the best trailer jack from Ultimate Jack. Ultimate Trailer Jack - Sidewind - 15-1/2" Lift - 1,500 lbs part number UJ44FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (7)
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Ultimate Jack Trailer Jack - UJ44FR

Highlights

  • 1,500-Lb Lift Strength: Handles heavy tongue loads with stable support up to 27-1/2" high.
  • Fast Height Setup: Seven preset drops give up to 12" of quick adjustment—no blocks needed.
  • Smooth Cranking: Low-friction ball screw and sidewind handle raise or lower easily under load.
  • No Hang-Ups: Retracts flush with the trailer frame to stay clear of curbs, ramps, and obstacles.
  • Full Clearance Option: Jack removes completely from mount for tailgate or hatch access.
  • Built to Last: Zinc-plated steel resists corrosion and weather wear for long-term reliability.

Features to know about

Fast Positioning Without the Hassle: 27-1/2" Lift With Built-In Drop Tube

No need to stack blocks or fight with a separate drop leg. This jack has seven height settings that give you up to 12" of quick drop right from the mounting bracket, plus another 15-1/2" of lift for fine adjustment. That’s a total adjustment of 27-1/2" at your fingertips. Just pull the easy-to-access pin, set the height, and start cranking. It’s a simple setup that saves time every time you hitch, park, or level your trailer.

Smooth Cranking Every Time: Low-Friction Ball Screw Design

The sidewind handle turns easily thanks to a low-friction ball screw that keeps wear, noise, and heat to a minimum. Instead of grinding metal on metal, the ball bearings roll through the threads for a clean, steady lift. Whether you’re raising a loaded trailer or dropping it for storage, the motion stays smooth and consistent. It’s a big step up from traditional screw jacks that fight you under load.

Built to Handle Real Loads: 1,500-lb Lift Capacity, 2,500-lb Static

This jack’s strength matches its easy operation. With a lift capacity of 1,500 lbs and a static capacity of 2,500 lbs, it’s ready for steady, stable support when you need it. The sturdy steel tubing—2" inner and 2-1/4" outer—means you can count on it to stay solid through repeated use without wobble or flex.

Durable Construction That Lasts: Zinc-Finished Steel and 5-3/4" Wheel

Everything about this jack is made for real-world use. The steel body has a corrosion-resistant zinc finish that stands up to moisture and road grime. The included 5-3/4" wheel rolls smoothly when you’re moving the trailer by hand, and the jack retracts fully to sit flush with the trailer frame to prevent hang-ups on rough ground. You can even remove it completely from the mount when you need extra clearance.

Easy to Mount Where You Need It: Bolt-On or Weld-On Bracket

Flexibility matters when you’re setting up your trailer, and this jack gives you options. The mounting bracket can be bolted or welded onto 3" x 3" or 3" x 4" trailer frames, so installation matches how you like to build or retrofit your setup. Once it’s in place, you’ll have a reliable side-mount, sidewind jack that’s ready for years of work.

Specs

Application

  • Trailer frame size: 3" x 3" or 3" x 4"

Dimensions

  • Height (extended): 43-1/2"
  • Height (retracted): 28"
  • Total adjustment: 27-1/2"
  • Lift: 15-1/2"
  • Drop leg adjustment: 12" - adjusts in increments of 2"
  • Inner tubing diameter: 2"
  • Outer tubing diameter: 2-1/4"
  • Wheel diameter: 5-3/4"

Weight and Capacity

  • Lift capacity: 1,500 lbs
  • Static capacity: 2,500 lbs

Warranty

  • Limited warranty: 1 year

RDJ-1.5K SIDE MOUNT Ultimate Trailer Jack - Side Wind - 27-1/2" Lift - 1.5K





Customer Satisfaction Score:

Ratings & Reviews

4.9

7 reviews
Review sort icon
Just pull the easy-to-access pin on this jack to drop the entire jack tube down for quick, easy adjustment. No drop leg needed. Seven height settings offer up to 12" of drop. Sidewind handle allows for an additional 15-1/2" of lift.

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very sturdy and quick to ship



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works great



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Installs easily very strong and stable.


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See what our Experts say about this Ultimate Jack Trailer Jack

  • Replacement Jack for Welded On Jack Bracket with 4 3/8" x 3 3/8" Dimensions Center-to-Center
    Hi Billy, The F500277 is for a Fulton trailer jack that is no longer in production. The 4 3/8" x 3 3/8" bracket measurements are typically from an older style weld on trailer jack, we used to have a version that fit those dimensions, but it has since been discontinued. Our best course of action is to cut off the old bracket and weld on a new one for another trailer jack. Since your boat is roughly 2,000 to 2,175lbs depending on the model, your tongue weight is 10-15% of that. So, the...
    view full answer...
  • How Does the Ultimate Trailer Jack Weld UJ44FR to the Frame?
    Hey Jon, welcome back. The adapter plate included with the Ultimate Trailer Jack item # UJ44FR can be welded directly to your trailer's frame. You can also use the included hardware and brackets to bolt it to your trailer's frame. The Ultimate Trailer Jack item # UJ44FR is a 1,500 lbs capacity jack with a 27-1/2" total lift. It is zinc plated for corrosion resistance and includes a 5-3/4" wheel. This would be a great replacement for your older Fulton Jack. What kind of trailer do you...
    view full answer...
  • How Does The Ultimate Trailer Jack Fold Up For Travel
    Great question, Suzanne! The Ultimate Trailer Jack # UJ44FR is designed to simply adjust all the way up for storage using the spring-loaded lever when you're ready for travel. This gets the wheel completely off the ground and high enough to avoid any clearance issues. That lever I mentioned makes this maneuver super quick and easy, too. This is different than similar jacks that actually swing/fold up and out of the way, becoming parallel with the trailer frame. I attached a picture to...
    view full answer...
  • Can I Replace My A-Frame Jack With a Side Mount Swivel Jack
    Hey, Pete! I think I’m on the right track here but, if I'm wrong about anything, let me know! Right now, you have an A-frame jack and you’re looking to replace it with a side-mount jack instead. Your trailer’s A-frame has a rail or beam running down the center of the open space between the “A.” I attached a photo of one of our A-frame jacks that looks similar to what you described. The jack you're looking at, part # PS1400400303 has an 11" bracket height, measured from the center of...
    view full answer...
  • Bolt On Trailer Jack that is Best for Low Clearance Below Trailer Frame
    Hey Charles, the Ultimate Trailer Jack part # UJ44FR would be your best option. This allows you to set the mounting bracket height relative to the jack wheel which makes it really great for low clearance situations like what you have now.
    view full answer...
  • Retracted Height Of Ultimate Trailer Jack
    Hey Kevin! The retracted height of the Ultimate Trailer Jack # UJ44FR is 28". If you're asking how far the jack hangs down when you adjust it all the way up, that is approximately 6-1/2" below the bracket to the bottom of the wheel. It can also be completely removed if you need additional clearance. It has 27-1/2" of total lift for an extended height of 43-1/2". This is designed for 3" x 3" or 3" x 4" trailer frames. What kind of trailer are you working on?
    view full answer...
  • Replacement Cap For Ultimate Trailer Jack
    Hi Kent, I completely understand wanting to get that cap replaced before anything works its way inside the jack and causes bigger issues. For your Ultimate Trailer Jack part # UJ44FR, there isn’t a direct replacement cap offered specifically for that model. That said, the outer tube on your jack is about 2-1/4 inches, and we do have a cap like part # TJA-2000S-CP that’s designed for that same outer tube size. It’s not listed as an exact match for your jack, so I can’t guarantee a perfect...
    view full answer...
  • Trailer Jack Recommendation for Attaching 4 to with Wheel Casters
    Hey Tyler, I recommend the Ultimate trailer jack part # UJ44FR for you. This can be welded to your metal frame like you are needing and each jack has a 1,500 lb weight capacity so with 4 you'd have well over what you need. This also has ability to move the trailer jack relative to the mounting bracket so it is option that has most overall flexibility while also has the wheel caster you want as well.
    view full answer...


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Steven C
Installed by:
Steven C
Employee Ed W
Installed by:
Ed W
Employee Daron K
Edited by:
Daron K
Employee Alex H
Updated by:
Alex H
Employee Sabrina W
Written by:
Sabrina W
Employee Joshua U
Video by:
Joshua U

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