Getting heavy gear on and off the trailer is simpler with this 4" drop axle. The underslung design—where the spring seats are welded to the underside—keeps the trailer lower to the ground, so ramps sit at a friendlier angle and loading stays smooth. The 95" hub-face-to-hub-face and 79-1/4" spring-center-to-spring-center spacing give the setup a steady, balanced stance for reliable towing.
A well-built axle keeps your rig tracking straight and tires wearing evenly. This high-strength steel beam is rated for 7,000 lbs and built with a slight center bend to set the right camber angle. That bend gives the tires even road-to-tread contact and stable, in-line movement—exactly what you want for smooth highway runs or long hauls with heavy cargo.
No need for hydraulic lines or actuators—this axle comes ready with electric brakes already installed. The tough cast-iron hubs and drums are pre-greased with bearings, races, seals, and lug nuts, so there’s no packing needed before you bolt it up. Just connect your wiring and plug it in for consistent, responsive braking every time you tow.
Maintenance is quick thanks to the built-in grease zerks on each spindle. A few pumps keep the bearings protected and rolling smoothly, cutting downtime between trips. The spring seats and spindles are welded in place for durability, while the hardware—adjuster plugs, mounting bolts, and all—comes ready to install so every connection stays tight.
This assembly isn’t just strong—it’s been thoroughly tested and certified by CSA, QAI, and SAE-N. That means proven braking performance, reliable construction, and real-world safety you can count on mile after mile.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
In order to find the correct replacement axle for your trailer there's a few things you need to do. The first one is we need to determine the capacity. The first place I always check for the axle capacity is on the axle tag, which is actually located on the axle. Now, most of these are in the center and they could be a white sticker or they could be a metal plate. Now, not all of them list the axle capacity, but the vast majority do, that's why I look here first. Granted, this is a new axle here, so the tag is in fairly good condition, but we can see on here GAWR, gross axle weight rating, 3,500 pounds, so I know this is a 3,500 pound axle.
So if you do have an axle tag and there isn't a capacity listed on there there may be a serial number, an axle number. And in which case, you could actually reach out to the actual manufacturer with this information and they should be able to give you the capacity. Some of the more common axle manufacturers on the market are Dexter and Lippert. So if you don't have an axle tag, that's okay. There is still other options to determine the capacity.
One would be to take a fabric tape measure and record the circumference of your axle tube. Now, once we have the circumference we can use the appropriate formula to get the diameter. And then using the diameter there's sort of a general axle guideline to determine capacity based on that diameter. So, for example, a 3,500 pound axle is gonna have a 2 3/8 inch diameter beam. Now, a 3 inch diameter beam would represent anywhere from a 5,200 pound to a 7,000 pound axle.
And there's also some larger ones as well as some smaller ones. So if we don't have that axle tag there we could just measure the diameter here of our axle tube. And another way is to actually look at the brake mounting flange bolts. Now, this is just gonna give you a rough ballpark. The 3,500 pound assemblies, they usually use this 4 bolt pattern where it's the larger 5200 to 7,000 pounds, use that 5 bolt pattern.
So that's more of a general guideline. That's certainly not all you wanna do, but it will help you reaffirm when you're measuring. So once we get to capacity there's two more things that we need to gather. The next one is going to be the hub face length. So the hub face length is gonna take our brake hubs into consideration. We're gonna be measuring from the part of the brake hub where our wheel mounts from one side to the other. So we'll go ahead and do that now. Now, once we have our hub face length, we need to determine our spring center length. So the spring center length is gonna be from the center of the leaf spring perch from one side to the other. So once we have all this information we can then use that to select the correct replacement axle for our trailer. We have a ton of different options to choose from based on a few different factors. Number one is the length of our axle, both the hub face and the spring center. There's gonna be several different options for each of these. There's also gonna be different axle capacities based on how heavy you need your trailer axle to be and how heavy your trailer is. Now, we always recommend replacing what's on your trailer with the exact same one that came off. So, for example, if your old axle had an 89 inch hub face that's what we'd recommend replacing it with. And the same goes for the weight capacity, although you can upgrade. No matter what capacity you need we should still have an option for you. Now, in addition to the capacity, we're also gonna have axles with a built-in drop if you need that, or just a straight axle. And we also have some different kits that are gonna come with some different components. We can either purchase the axle, just the spindle only axle. We could get this with an idler hub, or we could get this with an electric brake drum and some electric brakes, depending on what capacity you need..
Ratings & Reviews
Very robust and easily assembled product
Just what I needed shipped fast free and there was no damage
Thanks again e-trailer
Great service just like before
Called in the order and got exactly what I needed
These axles were ordered last Wednesday and arrived this Tuesday. (Missouri to western Idaho.
No missing parts
Haven’t assembled yet but expect no issues
The axles came pregreased and had new lug nuts
Shop around if you want. But I bet you’ll choose E-Trailer
Measured a few times based on the video and still measured wrong, axle did not fit and hub was damaged, castle nut did not go on correctly,
The brakes came apart in shipping and there should be directions on how to put it together
It arrive 2 day after ordering! I haven’t been able to install yet due to needing new U bolts but everything was was very well packaged and all the pieces seem to be there.
While the axle and components were a good value, the condition of the brakes when I received them was poor. Several internal components were either out of position or had come loose (during shipping?) In any event, I ended up having to rebuild the brake hardware to get it to function properly. I will also add, that shipping this "bundle" with manually adjustable brakes is unfortunate as the drop axle makes accessing the adjustment star very difficult. Fortunately for me, I had assembled the axle assembly prior to installation. While challenging to do the initial brake shoe adjustment while up on sawhorses in my garage, at least I wasn't under the trailer trying to do it. As I am not the only person voicing this concern, I feel confident in saying that I wish eTrailer could come up with a design that doesn't have this issue.
I used these axles to upgrade my travel trailer suspension.they Seem to be a good quality item. Good paint job on the axles. Compared to axles that came with the travel trailer. Which helps living on the coast.
Fit perfect easy install
Picture shows complete axle assembly. Received three boxes and an axle with smashed threads
Went together well, perfect replacement. Be sure to measure from spring centers (80" on the nose) and hub faces (95" on the nose). I was suprised when this shipped UPS. I didn't know they would handle something this large/heavy. 3 boxes and the axle. One box has the electric brakes. One box each for the hubs (pregreased). Came with castle nuts, washers and cotter pins and nylocks for the ebrakes. One end of axle was just wraped in plastic and plastic was ripped around circumference of spundle end but threads and zirk were intact. On the other end of the axle it was protected with a rubber boot under the plastic wrap and threads were ok but zirk had been snapped off. Used an easy-out to extract the rest of the zirk out of the axle and replaced with a new one. Zirks are 1/4" - 28tpi. I have no idea what the manufacturer of my trailer is other than Joe Schmoe farmer LOL. But it has two 6 bolt hub axles made in china just like this one and the measurements matched. On one axle the brakes failed, then bearing failed, then hub and wheel sailed off and there was too much damage to the spindle and threads. The spindle can be replaced but chose to get this axle for quick and easy turn around. I then shot both hubs full of grease with an air operated grease gun which took about two tubes of grease. The bearings come prepacked with the blue marine synthetic grease, I shot the hubs with red GLCI 2 once hubs were mounted on the axle and grease cups mounted. Their are two grease cups for each hub, one with removable rubber center disk and one without - you choose. Other related info: Spring bolts were 9/16"-18tpi x 3", I had to snap two off so replaced all four for this axle with grade 5 bolts and nuts and used split ring lock washers. Shackles I bought from here did not come with lock washers so I put 1/2" split ring lock washers under the shackle nuts. Extra hardware all came from McMaster Carr. I did cheat and used a tractor with bucket mounted hitch to lift and lower the trailer tongue :). It was more of a pain to remove the old axle than install this new one, took a couple hours, I am in my 60's. So not bad at all. I have not used the trailer with this new front axle as yet but I have no qualms about doing so. I have noticed the front of dual axles always seems to take a disproportionate more amount of the load no matter what the tongue height or accurate the tire pressure. Just as good an axle as the original.
Happy with the product, not happy that we paid for a fully dressed axle and it came in parts for us to put together.
Everything I needed came. Already on and working good. Will buy again if needed!!!
Ordered them using my original axel tags, had to have them modified to be mounted correctly and rerun the break wires to fit properly. Not sure if my trailer manufacturer modified the original axels to fit but spent quite a bit to make them work.
This is a big improvement on my existing 3500# axle. I like that the y routed the brake wires through the tube rather than on the outside.
There was no castle nut kit included.
I had to source the parts from another vender to complete the job. Very disappointed
I didn’t think to clarify, I expected this to be shipped as one ready to install assembly. What I received was multiple shipment and not quite all the parts. Customer service quickly resolved the missing items and assembly and install wasn’t terribly difficult so I’m not knocking the product. It is what I was sold.
Awesome axle the spring brackets where wrong from the description but moved and rewelded to fit with zero problems would definitely buy from this company again
Awful service. Ordered an axle they sent a hitch. Cancelled order cause they weren’t going send axle out till they picked up the hitch lol. They still haven’t picked up and won’t refund money till ups picks up. Look around I found an axle place close by 30 minutes away with axles in stock. I will never use etrailer again!!!!!
Delivered as described, earlier than expected, less costly than others with free shipping!
Careful measurements and the axle bolted right up.
Fully greased hubs with seals and bearings installed made assembly quick and easy.
Waiting on new tires for the trailer and will road test soon.
Couldn’t be happier with this purchase from Etrailer!
The axle and spring seat are doing well after a year. Even with my shade-tree mechanic welding abilities and thousands of grueling miles thru some of the roughest highways in North America (namely West Virginia) both are holding up to the task.
The axle and brakes were a perfect fit. All of the parts I needed were included and installation was straight forward. I could not be happier.
I ordered two axles to upgrade my trailer capacity to what the frame is rated for, 12,000lbs. The axles have great bearing seats and backing plate studs. The backing plates are fully assembled and ready to connect to the wires already installed into the axle tubes. The hub assembly went smooth and only one set of break shoes needed adjustment. A good buy along with the 5 fully assembled tires and wheels.
Buying the kit complete was a good decision. It showed up early than predicted and having the grease and wires already in place shows your professionalism. I would recommend this product and company to everyone in the market.
easy to order. reasonable price
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