Trailer Gearbox Polymer Multi-Mount


17 in stock (can be backordered)



The Trailer GearBox Polymer Multi-Mount is a patent pending, injection molded, Glass-reinforced ABS, torque amplifying, gearbox. One hundred percent designed and made in the USA. The Trailer GearBox Polymer Multi-Mount has two reduction ratios. One for lighter loads to get the job done faster, and one for heavy loads to effortlessly raise or lower your trailer. The Multi-Mount’s design allows for a wide array of mounting options.

Only one Trailer GearBox Polymer Multi-Mount is needed for each tow vehicle in your fleet since it attaches and detaches to your trailer with a cotter pin in seconds. With each tow vehicle servicing many trailers this is a significant savings vs a dedicated unit on each trailer. The Trailer GearBox Polymer Multi-Mount may be left on one trailer if desired and not removed between uses.

Warranty Information:

The Trailer GearBox Polymer Multi-Mount is backed by a 1 year warranty. For more information on our warranty policy please refer to our Terms and Conditions Page

*Warning use of Hammer Drill or Impact will void warranty*


What’s included:

1- Trailer GearBox Polymer Multi-Mount

1-Universal Mounting Bracket

1-Socket Adapter

1-Mounting Bolt

1-Cotter Pin


Instructions for use:

*Warning use of Hammer Drill or Impact will void warranty*

Before using your Trailer GearBox Polymer Multi-Mount, raise the trailer all of the way up until it stops. Once it is all of the way up, clean the lower section of the jack and apply the included yellow and red “Stop” sticker just below the top section as shown. This gives you a warning when you are close to bottoming out your jacks travel. It is important that you do not bottom out the jack since it can cause damage to the jack, Trailer GearBox Polymer Multi-Mount or your drill. Lower the trailer back down until it covers the sticker. When you raise the trailer up using the Trailer GearBox Polymer Multi-Mount, seeing “Yellow” means caution. As soon as you see any of the red sticker, stop raising it up. Use the clutch on your cordless drill set only as high as needed to raise the trailer without slipping. This will help prevent any damage if the jack is bottomed out. It is good practice to place 2×6 wood or similar under the trailer jack to support and distribute the weight evenly especially on soft ground. Using enough wood helps from having to raise the trailer as far to uncouple it from your tow vehicle. Make sure you chock the tires on your trailer before uncoupling, even on apparently flat ground.

The Trailer GearBox Polymer Multi-Mount attaches to your trailer’s jack by removing the jack handle and sliding it over the shaft. Replace the bolt that holds the handle or use the supplied pin and you are done! You may have to file off excessive paint and any burs left from the old bolt to install your Trailer GearBox Polymer Multi-Mount if it won’t easily slip over the shaft.

To use the Trailer GearBox Polymer Multi-Mount to raise or lower your trailer, use a socket adaptor (Included) with a 3/4″socket and use the power of the drill to effortlessly raise or lower the trailer.

The Trailer GearBox Polymer Multi-Mount has two input shafts, one for heavy loads where more torque is needed and one for lighter loads where speed is more important.

Either speed is much faster than hand cranking and allows you to hook or unhook the trailer much faster than by hand. This is especially important when your tow vehicle is partially blocking the road and creating a hazard.

The use of the Trailer GearBox Polymer Multi-Mount greatly reduces the fatigue of the operator and reduces the likelihood of shoulder and elbow injuries caused by hand cranking.

Additional information

Weight 5.5 lbs
Dimensions 5 × 6 × 8 in


There are no reviews yet.

Be the first to review “Trailer Gearbox Polymer Multi-Mount”

Your email address will not be published. Required fields are marked *