Lowest Height of Power Mountain Tallboy Off-Road Bottle Jack with Axle Saddle Equipped

Updated 09/11/2025 | Published 09/08/2025

Question:

Hi. I have a question about the Power Mountain Tallboy Off-Road Bottle Jack. Im trying to find out if itll fit under my travel trailer axle. What is the height of the jack when it has the adapter collar installed with the axle saddle at its lowest? Im looking for the lowest height at the bottom of the saddle and the height at the top of the saddle sides. Thanks so much.

asked by: Todd

Expert Reply:

Hey Todd!

At the lowest setting, the saddle of the Power Mountain Tallboy Off-Road Bottle Jack # PM34FR sits at 14" and the top of the saddle arms are at 15-3/8". I took a photo of it out in our warehouse, and while I wasn't able to get an exact photo at eye level (my camera kept getting out of focus), I took one close to eye level so you can get an idea of the height.

If the saddle sides are too tall, you might be able to slide the bottle jack under your axle at an angle to get it in place.

Will this height work for you?

expert reply by: Jon G

Tallboy Off-Road Bottle Jack Saddle Height
(click to enlarge)

Todd

9/9/2025

Thanks so much for the information. I'm going to the trailer soon (it's in storage) and I'll measure then. Looking at the picture it looks like you have the shortest extension installed instead of the screw sleeve that you unthread the top of the jack and then install the sleeve and thread the top back down. It's the 12th picture on your product page that says "Screw sleeve must always be used when using extensions". I think this would bring the height down a bit from what you measured. However, if it works with what you measured it will definitely work with the screw sleeve. Todd

Jon G.

9/9/2025

@Todd I actually tried that, and the saddle wouldn't fit - I had to use the lowest (A) adapter piece as it gets thinner at the top.

Todd

9/10/2025

@JonG Jon, That's strange since it tells you to use it when using the saddle. Thanks for checking. Todd

Jon G.

9/10/2025

@Todd Yeah, I was a little underwhelmed at the instructions when I got into the packaging, but I will say the product looks and feels like it does a great job. There are a ton of great products that have lacking instructions.