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.
No need to mess with packing bearings or installing seals. This Lippert hub-and-drum assembly comes pre-greased and includes the inner bearing (25580), outer bearing (02475), and grease seal (GS2250DL) already in place. With everything prepped from the start, you can bolt it on and get back to towing faster, without the greasy cleanup that usually comes with hub work.
When you’re pulling serious weight, you need gear that can take it. This assembly fits Lippert 8,000-lb axles and supports up to 4,000 lbs per hub. Its solid iron construction gives it the strength and durability you want when hauling heavy loads, with the braking surface area to handle the demands of both electric and hydraulic drum brakes.
With its 12-1/4" diameter x 4" drum, this hub provides the proper surface area for your brake shoes to grip when the brakes are applied. That means solid, consistent braking performance every time. It’s a dependable setup that keeps your braking smooth and predictable over the long haul.
Designed with a 2.722" hub bore, this assembly works with a threaded grease cap for a secure, service-friendly fit. That makes adding grease or checking the hub straightforward, so you can stay on top of maintenance without extra hassle.
The 8 on 6-1/2" bolt pattern and 9/16" diameter x 1-5/16" long studs give you a tight, reliable wheel connection. It’s a proven setup that holds up well under load and keeps your wheels tracking true mile after mile.
1. Count the lug holes
Look at the wheel hub or the back of the wheel and count how many lug holes there are(also called bolt holes).
Common configurations include: 4-lug, 5-lug, 6-lug and 8 lug
2a. For even lug counts (4-lug, 6-lug, 8-lug)
Measure from the center of one lug hole directly across to the center of the hole opposite it.
Common configurations: 4 on 4", 6 on 5.5", 8 on 6.5"
2b. For odd lug counts (5-lug)
Measure from the center of one lug hole to the outer edge of the hole directly across (not center-to-center since there's no directly opposite hole).
Common configurations: 5 on 4.5" (most popular), 5 on 5", 5 on 4.75", 5 on 5.5"
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this 12 1/4 inch diameter pre-greased trailer hub and drum assembly for 8,000 pound axles, has an 8 on 6 1/2 inch bolt pattern with 9/16 inch diameter wheel studs. Now, this trailer hub and drum assembly is gonna provide the surface area for brake shoes or brake magnets to grip when your electric or hydraulic brakes are activated. So it is compatible with both the electric and hydraulic drum brakes. Now, this is a pre-greased hub and drum assembly. And you could probably look, if you look in the back here, you can see where the grease is coming out.
And if we swing it around to the front, you'll be able to see the grease also. This pre-greased hub and drum assembly is very easy to install, there's no need to pack the bearings. When you see receive it, all you need to do is slide it right onto the spindle, and it's ready to go. It does use a lithium complex multipurpose grease that keeps the bearings lubricated. And this drum is a sturdy iron construction.
Now, it will include the bearing races, which are pre-installed in the hub that the bearings are gonna sit on. Does include both the outer bearing, and in the back, you can see the inner bearing. And then, also, the grease seal is included, installed in there. Now, it does not include a grease cap or lug nuts. Those you would have to supply yourself, we do sell those separately on our website.
And the studs use 9/16 inch diameter studs, so it will require 9/16 by 18 size lug nuts. Application, this is for 8,000 pound trailer axles. The drum dimension, which is measured, the inside dimension, 12 1/4 inches, four inches wide. It is designed to work with 12 1/4 inch brake assemblies. The wheel size that'll fit on this is 16 inches and larger.
We mentioned the bolt pattern is an 8 on 6 1/2 inch bolt pattern. And the weight capacity on this one hub and drum assembly is 4,000 pounds. So when it's used with one on the other side of the axle, it'll match the 8,000 pound trailer axle rating. But that's gonna do it for a look at the 12 1/4 inch diameter pre-greased trailer hub and drum assembly for 8,000 pound axles.
Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
Ratings & Reviews
Mike L.
2/18/2026
I'm sorry that happened, Tim. I'll get that taken care of for you.
Katrina B.
10/25/2022
If you would like to provide more information about your experience I am more than happy to assist you in getting your review updated.
Do you have a question about this Trailer Hubs and Drum?
Info for this part was:
At etrailer 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.
Mike L.
7/12/2026
I'll get that missing 02475 bearing sent right out, Michelle. I'm sorry that happened!