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  1. Trailer Jack
  2. Pro Series
  3. Side Frame Mount Jack
  4. 9001 - 10000 lbs
  5. Sidewind Jack
  6. Drop Leg
Pro Series Square Jack - Drop Leg w/ Spring Return - Sidewind - 26" Lift - 10,000 lbs

Pro Series Square Jack - Drop Leg w/ Spring Return - Sidewind - 26" Lift - 10,000 lbs

Item # PS1400950376
Our Price: $186.27
Trailer Jack
This item qualifies for Free Shipping
Shipping Weight: 59 lbs
In Stock
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Product Expert Mike S

Is this right for you? Product Expert Mike S says:

Yes, if you:

  • Don’t want to have to wrestle with the heavy drop leg
  • Don’t want the added expense of buying a hand crank separately

No, if you:

  • Want a finish that will last
Heavy-duty, weld-on, square, drop leg jack includes a sidewind crank and has a front-facing plunger pin and a 28-1/4" retracted height. Perfect for agricultural, construction, livestock or heavy-duty utility applications. Great Prices for the best trailer jack from Pro Series. Pro Series Square Jack - Drop Leg w/ Spring Return - Sidewind - 26" Lift - 10,000 lbs part number PS1400950376 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (456)
  • Q & A (0)
  • Photos
  • Why etrailer?

Pro Series Trailer Jack - PS1400950376

  • Side Frame Mount Jack
  • 9001 - 10000 lbs
  • Sidewind Jack
  • Drop Leg
  • Weld-On
  • Fixed Mount Jack
  • 26 Inch Lift
  • With Rectangle Foot
  • Pro Series

Heavy-duty, weld-on, square, drop leg jack includes a sidewind crank and has a front-facing plunger pin and a 28-1/4" retracted height. Perfect for agricultural, construction, livestock or heavy-duty utility applications.


  • Sturdy steel construction provides heavy-duty durability
  • Weather-resistant inner and outer tubes have black paint finish
  • Drop leg with spring return increases overall extension for maximum adjustability
    • Plunger pin positioned to the front
  • Direct-weld design
  • Sidewind crank included
  • Integrated footplate


  • Bracket height:
    • 28-1/4" Retracted
    • 54-1/4" Extended
  • Total lift: 26"
    • Travel: 12-1/2"
    • Drop leg: 13-1/2"
  • Outer tube dimensions: 24" tall x 4" wide x 4" deep
  • Lift capacity: 10,000 lbs
  • Static capacity: 12,000 lbs
  • Limited 1-year warranty

1400950376 Pro Series Heavy Duty Square Direct Weld Jack with Spring Return Drop Leg - Sidewind - 12-1/2" Travel - 10000 lbs

1400950376 Eclipse Square Direct Weld Jack with Drop Leg, Sidewind, 26" Travel

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Pro Series Square Jack - Drop Leg w/ Spring Return - Sidewind - 26" Lift - 10,000 lbs - PS1400950376

Average Customer Rating:  4.8 out of 5 stars   (456 Customer Reviews)

Heavy-duty, weld-on, square, drop leg jack includes a sidewind crank and has a front-facing plunger pin and a 28-1/4" retracted height. Perfect for agricultural, construction, livestock or heavy-duty utility applications.


Product was great, however in he shipping process, the stand was scratched and paint was damaged

I hate to see that the jack arrived damaged. I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 09/17/2022


Works great


Works great on my dump trailer. Love it. Highly recommended


We've installed these on several trailers for out autorestoration and custom welding shop in detroitlakes mn, we also build bumper jacks and other lifting equiptment out of these.
Etrailer sells them at the best price ,and packaging/shipping was impressive too.
Even beaten half to death, scratched, dented, left in the weather, mud and rust, these things still work effortlessly, theyre the only way to go and easy to hook to hyraulic, chain, motor or cable drives for hands free operations !


I highly recommend etrailer and this jack. I bought this tongue jack for a race trailer that is loaded with tools and gear, and vehicles. The prior jack with a comparable weight rating failed. I installed this product and couldn't be happier. The operation is smooth and fast. The spring loaded extension minimizes the throw required from the crank, making hitching much easier and faster. This jack is very heavy duty and durable. Furthermore,, I shopped for about 3 months before pulling the trigger on a new jack and this was clearly the best price out there for the features. Lastly, the product shipped within 24 hours and was delivered ahead of schedule. I will definitely use etrailer again.

Its been a year since I installed this jack on my race trailer. The trailer is quite heavy with tools and equipment and the factory jack failed. This jack is a joy to use. I considered electric, but have been very happy with this manual jack. The spring loaded extension makes it so that you never need to lift more than the hight of your hitch ball and I never need any blocking. It is incredibly burly and has been the perfect addition to the trailer. I highly recommend it.
Grant L - 06/17/2020


Packaging was not appropriate for the item. Box was damaged because parts are heavy. Paint on jacks damaged because of improper packaging.

I will have our Customer Service team reach out to you. I recommend touching up the affected areas with a rust resistant paint like Rustoleum which you will then have on hand for regular maintenance.
-- Etrailer Expert Jenny N - 06/03/2022


Working great just welded to trailer! Very solid and easy to use. E trailer mailed very quickly. Thanks again!


this trailer jack is easy to lift your trailer. It also has grease fittings to keep it turning easy. Good product


Awesome jack, perfect replacement for m ine


This works perfect for my heavy duty tr ailer.


Just got it welded on and it is holding the trailer up. The jack looks to be well made, turns easier than the BullDog I replaced. The service at etrailer was incredible, shipped the jack within hours of ordering it.


Welded it onto my scrap trailer where I constantly haul 2-3 ton, and it cranks like butter. I always had to fight with my smaller jacks and replace them. This one is amazing. Best decision ever. Now, I just wish my grandpa could see the improvement on his old trailer.


Works perfect


nice product work great


Great perfectly!


Great trailer jack! Makes unhooking and hooking up so easy.


Works as it should

Works fine
Alan - 04/07/2022


I ordered 16 inch steel trailer rims for an 18 foot trailer. I got what I ordered and they work great. Also a heavy duty jack for the tongue, welded it in place and it works good too.


Works smooth. Lifts well. Love this pro duct.


14k dump trailer came with a 5k jack that was broken why the weight of the loaded trailer tongue sitting on it. The bigger jacks like this are on the other 12k, 14k and 16k capacity trailers and they are close to bullet proof.
Other than a pump of grease once and awhile you know you can unhitch with these jacks loaded or not without issue, which is well worth the price and effort to install.


These replaced a couple of jacks that stripped and could not be lowered or raised anymore. The trailer gets used on on la lot of dirt roads and fields, and the dirt and vibration seems to take its toll on any moving parts. These worked great as replacement, very easy to crank even with the doubled.

These were just a little smaller in width than the old ones I had, but was not an issue for installing in place of, they do however hang a couple inches lower than the other ones I had, still has enough clearance, but something to be mindful of.


The jack is great and thank you for your quick deliver


Great product! I’ve had it over a year now and use it to its fullest potential with absolutely no problems. Showed up when it was scheduled to and came ready to install, I’d recommend etrailer to anyone looking for quality trailer parts.


Definitely a heavy duty product very heavy and works great

WELL WORTH THE MONEY my local atwoods had a 8,000 pound jack for 100.0 then I got on here and ordered this it arrives fast the tracking shipment was accurate I am very pleased with the new product


Received the trailer jack very quickly. Although the box it came in looked like it had been dragged behind the UPS truck the contents were in perfect shape. It was very easy to mount and functions flawlessly. I will most certainly be making purchases again from

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