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Upgrade your power-up/gravity-down dump trailer from manual cranking with a 10,000-lb Atlas IV jack. Double-acting operation powers extension and retraction, and the 60" kit includes the valve, hoses, and fittings to tie into your hydraulics.
If you're still cranking a heavy manual jack even though your dump trailer already has hydraulic power, this Atlas IV kit lets you put that system to work at the tongue too. The jack gives you 10,000 lbs of lifting capacity and 26" of lift for easier hitching and unhitching when you're dealing with a heavy work trailer. Because the Atlas is double acting, hydraulic pressure powers it in both directions. You get powered extension to raise the trailer and powered retraction when it's time to bring the jack back up.
The included connection kit is designed to let this double-acting Atlas share a compatible power-up/gravity-down dump trailer hydraulic system instead of requiring a second power unit. A 6-port selector valve directs hydraulic flow between the jack circuit and the dump cylinder, while the included hoses and fittings make the connections between the existing system and the new jack. The jack itself does not have a built-in manual override, so emergency operation will depend on the capabilities of your trailer's hydraulic power unit.
This kit includes two 60" hoses and two 22" hoses. Before installation, you should compare those lengths with the locations of your pump, selector valve, dump cylinder, and jack. Trailer layouts vary, so planning the routing first helps you choose a practical valve location and determine whether the included hoses will reach where you need them.
The universal eight-hole bracket gives you a bolt-on mounting option when the pattern matches your trailer frame. You should check the bracket and bolt-hole dimensions on the jack to make sure it'll work with your trailer. Mounting hardware is not included, so you can choose the bolt length that fits your frame thickness.
Once it's mounted, glide bearings help prevent contact between the inner and outer tubes, while Stillwell's seal design helps improve cycle life and load holding. A zinc-plated swivel foot and powder-coated steel construction add protection for repeated work around a dump trailer.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Nick S.
12/15/2025
I am sorry to hear you are having trouble getting the Atlas to retract. We will reach out shortly and help troubleshoot through this.
Do you have a question about this Trailer Jack?
Info for this part was:
At etrailer 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.
Lazer S.
5/5/2026
Sorry about the lack of instructions, Sean. I will see if I can get those added to our site so they are available to everyone. Surprised they weren't included. What did you install this on?