Arrives before Christmas 
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Perfect for lifted trucks, these jack lift extenders provide 6" of additional vertical clearance when you load and unload your truck bed camper. Simply bolt the extenders to the bottoms of your jacks and you are ready to go.
Features:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Ellen: Hey everyone, I'm Ellen here at etrailer.com. Today we're taking a look at the Lift Extenders for HappiJac Truck Camper Jacks. If you are using your HappiJac in a more lifted truck or something that's going to be a little bit higher off the ground and your HappiJac just isn't able to get the amount of purchase that you need it to, to take your truck bed camper out of your bed, this is going to give you a six-inch extension to attach to the bottom of those jacks so you can drive away without having to worry about everything fitting and everything working right. They're pretty simple, just four extensions here.They do have a convex and then a concave end. Our concave should match up to our bed, so basically that's the one that kind of bows up like a little dish that should go on the top towards our jack and then the bowed out or convex one will go towards the ground. That just helps it adjust a little bit to different levels of pavement or softer ground like if you're on gravel or dirt or something, it just gives it a better connection with the ground.So once we have that in place, we can take our included hardware, drop that down through the bottom of our jack into the top here and then connect everything together.
So we'll have a bolt and a lock nut for each attachment point. There'll be two per extender. So pretty straightforward. These should match up directly with that HappiJac foot, but I'm going to give you some measurements here.These are going to be six inches long. Overall, they're about six and a half inches tall from where it bows out to the top of the lip here.
But because of that design where it kind of bows out and bows in, you really get about six inches of lift. So if we go from the inside edge here to the inside edge there, it's about six inches for this welded portion. The footprint of these it's about three and three-quarters inches across, and then about four and a half inches front to back. They are made in the USA, completely welded construction with a black powder- coat finish so they shouldn't have any issues with rust or corrosion. They'll give you that six inches of lift that you need to get your embed camper off of your truck.
And that's going to do it for our look at the lift extenders for HappiJac truck camper jacks..
Provided the additional extension height needed when switching from a conventional 3500 pickup truck bed to a 4500-5500 flatbed, very sturdy and simple bolt-on attachment…
(I added the reflective tape)
The extenders give me the hight I needed with my lift and tires to easily take my truck camper off my rig.
Victoria H.
3/8/2025
Its lookin' good Lance!
Nothing but great things to say about etrailer.com! Product was as described and was shipped super fast. Happyjack 6" jack extensions. Made of high quality steel and extremely easy to put on. Price is competitive! Thanks etrailer.com!
As always exceptional products and Serv ice!
We have been very happy with any of our HappiJac products. The latest purchase has been no different, we are very pleased with the quality.
Absolutely essential if your truck is higher than the standard pickup height. Easy to put on and take off. Make sure to remove if you are traveling rough back country roads
etrailer is slow..
They fit well work sweet and shipping was a day ahead of the estimate thanks great service and shipping!!
The Lift Extenders work perfectly. Steady and strong.
Desert T.
10/26/2023
Working great. I needed an extra little boost as I have a flat bed truck with out the boost only had 2 or so inches of clearance. With the extension I got tons of clearance. A good investment.
Mike L.
11/12/2023
Extremely effective and very easy to in stall.
Quality product
Great product worked like a charm.
Absolutely solid byild
Good product fast deliver
Do you have a question about this Accessories and Part?
Info for this part was:
At etrailer.com 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.
Philip
5/9/2025
Has been working out perfectly while also preventing the Jack post from being over-extended past it’s designated limits - a definite ’must have’!