bing tracking image
  1. Trailer Axles
  2. etrailer
  3. 6000 lbs
  4. 86-1/2 Inch Hub Face
  5. 6 on 5-1/2 Inch
  6. 71-1/2 Inch Spring Center
Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs
etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
etrailer

Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs

Part Number: e73SR
In Stock
$579.20
Trailer Axles
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

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.

Product Images

Customer Photos

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Trailer axle measures 86-1/2" from hub-face-to-hub-face and 71-1/2" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and hardware. Easy Grease spindles for simple lubrication. Great Prices for the best trailer axles from etrailer. Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs part number e73SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (273)
  • Q & A (0)
  • Photos

etrailer Trailer Axles - e73SR

Highlights

  • 6,000-lb Capacity: Handles heavy loads for stable towing and long-term durability.
  • 86-1/2" Hub Face x 71-1/2" Spring Center: Matches key trailer dimensions for proper alignment.
  • Easy Grease Spindles: Built-in zerks let you lube bearings without disassembly.
  • Electric Brakes Installed: Manual-adjust brakes give strong stopping with no hydraulic lines.
  • Pre-Greased Hubs Included: Bearings, races, and seals come ready to roll—no packing needed.
  • 3" Round, Underslung Axle Design: Lowers deck height for easier loading and steady handling.

Features to know about

Steady, Controlled Towing: 6,000-lb Capacity Axle Built for Straight-Line Tracking

A wobbling trailer can make every mile stressful. This 6,000-lb rated axle keeps things calm and controlled with a 3" diameter round steel beam that acts as part of your suspension system. The slight bend near the center gives the right camber so the tires maintain even contact across the tread. That means better straight-line acceleration, steady tracking, and less sway when towing.

Simple Maintenance that Lasts: Easy Grease Spindles with Built-In Zerks

Keeping bearings lubricated shouldn’t be a messy job. The Easy Grease spindles feature built-in grease zerks so you can add fresh grease without pulling everything apart. Each hub is pre-greased and fitted with bearings, races, seals, and lug nuts, saving time and keeping the setup clean. The grease cap flange measures 2.446" in diameter, so it seals tight and keeps grime out.

Close-up image of a pre-greased trailer hub with the grease cap removed, showing the greased bearings and ready-to-install components for a 6,000 lb trailer axle.

Complete, Ready-to-Mount Setup: Electric Brakes and Hardware Included

Everything you need to get rolling comes in the box. The kit includes electric brake assemblies, 12-15/16" x 2-3/8" hub-and-drum units, adjuster plugs, mounting bolts, and hardware. The brakes are manual-adjust type, so you can fine-tune them when needed. There’s no actuator or hydraulic lines to run—just wire them up and you’re set. This axle measures 86-1/2" hub face to hub face and 71-1/2" spring center to spring center, with a 6 on 5-1/2" bolt pattern that fits common 14-1/2" to 16-1/2" wheels.

Built Low for Easier Loading: Underslung Design with Welded-On Spring Seats

Loading a heavy trailer is easier when it sits lower to the ground. The underslung design puts the spring seats on the underside of the axle so the leaf springs (sold separately) mount below the beam. That keeps deck height low for quick loading and unloading. The spring seats and spindles come factory-welded in place using a patented process that produces 40% stronger welds and prevents spindle failure.

Proven Strength and Safety: Certified for Real-World Performance

Every part of this axle and brake setup meets CSA, QAI, and SAE-N standards after thorough lab and road testing. The cast-iron hubs are built for durability, and the high-strength steel beam holds up under long-haul use. With solid construction, proven braking performance, and a limited lifetime warranty, this axle is designed to deliver the kind of reliability you can count on mile after mile.

Specs

Weight and Capacity

  • Weight capacity: 6,000 lbs

Dimensions

  • Hub-face-to-hub-face length: 86-1/2"
  • Spring-center-to-spring-center length: 71-1/2"
  • Drum dimensions: 12-15/16" diameter x 2-3/8" wide
  • Grease cap flange diameter: 2.446"
  • Axle diameter: 3"

Technical diagram of a trailer axle showing hub face and spring center measurement points labeled A and B for accurate axle dimension reference.

  • A: Hub face (A) refers to the length of the axle measured from the base of one wheel stud to the base of the wheel stud on the opposite side of the axle (when hubs are mounted on the beam).
  • B: The spring center (B) is the approximate width of your trailer. It is measured from the center of the spring seat on one side of the axle to the center of the seat on the other.

Wheel Information

  • Hub bolt pattern: 6 on 5-1/2"
  • Wheel stud dimensions: 1/2" diameter x 1-1/4" long
  • Wheel size: 14-1/2" to 16-1/2"

Warranty

  • Limited lifetime warranty

Bearing, Race, and Seal Information

  • Inner bearing: 25580 (1.75" inner diameter)
  • Outer bearing: 15123 (1.25" inner diameter)
  • Inner race: 25520
  • Outer race: 15245
  • Grease seal: GS2250DL
  • Grease seal inner diameter: 2.25"
  • Grease seal outer diameter: 3.376"

Note

  • Axle does not come fully assembled.

BS60RUW86.50071.500 etrailer by AxleTek 6,000 lb Axle Beam - 86.5" Hub - 71.5" Spring Ctr

B12E-21 12" Electric Brake Assembly for 5.2/6/7K Axles - Left Hand

B12E-22 12" Electric Brake Assembly for 5.2/6/7K Axles - Right Hand

19-125 Hub-Drum Assembly Compl Boxed - 6K - 6 on 5.5 - PG EZ





Ratings & Reviews

4.4

273 reviews
Review sort icon
Trailer axle measures 86-1/2" from hub-face-to-hub-face and 71-1/2" from spring-center-to-spring-center. Includes electric brake assemblies, hubs, drums, bearings, races, seals, and hardware. Easy Grease spindles for simple lubrication.

by:

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.



by:

There was no castle nut kit included.
I
had to source the parts from another vender to complete the job. Very disappointed



by:

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.



by:

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



by:

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!!!!!



by:

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!



by:

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.



by:

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.



by:

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.



by:



by:



by:



by:



by:



by:



by:



by:



by:



by:

Great quality. Works as intended. Super fast delivery.



by:

good products fast shipping good coustomer service thanks



by:

Sent the wrong Axle!!!

Mike L. profile picture
Etrailer Expert

Mike L.

4/13/2026

Sorry that happened Kevin. I'm getting everything together for the return/reshipment of the correct axle!



by:

The axle seems good. Nice that the ball bearings were grease. We will see over the miles if all goes well. The delivery, besides the break assembly was quick. Not sure why the break assembly was not shipped with the rest.



by:

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.



by:

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.



by:

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.


25
25

See what our Experts say about this etrailer Trailer Axles

  • Lookiing To Upgrade Axles On 2015 Keystone Cougar 33RBK
    Hello Rene, thanks for reaching out. It is pretty typical for RV manufacturers to use axles that are not rated for the full GVWR. They say this is because 10%-15% of the camper weight is on the hitch instead of the axles. They will put the bare minimum axle on there to save on costs. Very typical in the RV industry these days sadly. It is possible to use a higher rated axle. For the 86-1/2" axles we have a 6,000 lb option. We offer it fully loaded with brakes and 6-lug hubs as part #...
    view full answer...
  • Replacement Axle for a 4,400 lbs AL-KO Axle
    Hey Shane! The closest axle we have to those dimensions is the Trailer Axle w/ Electric Brakes item # e73SR. It has a 86-1/2" hub face and a spring-center-to-spring-center length of 71-1/2". You may be able to get away with the hub face being slightly longer depending on your fenders but you'll need to use the Spring Seat item # TRSS300 to replace the ones that come with the axle.
    view full answer...
  • Looking For Replacement For AL-KO-7230 Hub On Old Bison 2 Horse Bumper Pull Trailer
    Hello Chris, thanks for reaching out. Based on my research, it looks like the AL-KO-7230 is a hub for a 3,500 lb axle with a 6 on 5-1/2" bolt pattern. We do offer a replacement for this, and for that I recommend the following: - Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 6 on 5-1/2 - Pre-Greased # AKHD-655-35-K
    view full answer...
  • Recommended 6,000 lbs Axle w/ 86-1/2" Hub Face and Braking Hubs w/a 6 on 5-1/2 Lug Nut Pattern
    Hey Jeff not sure what else it is you're looking at. The Trailer Axle w/ Electric Brakes item # e73SR come with spring seats welded onto them at 71-1/2" apart. This is measured from the center to the opposite center of the mounting bolts. This is one of our etrailer branded axles. The etrailer item # e73SR is a 6,000 lbs axle with a 86-1/2" long hub face and comes with easy grease braking hubs that have a 6 on 5-1/2 lug nut pattern. I attached a diagram below so you can see these measurements....
    view full answer...
  • Who Makes the Trailer Axle with Electric Brakes 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs
    The Trailer Axle with Electric Brakes part # e73SR is made by AxleTek. If you're looking for a more well known manufacturer, we offer this same setup from Dexter as well, the Dexter Trailer Axle with Electric Brakes part # 8327826-EB which is also made here in the USA. These are both great options with similar specs, one just from a little more well manufacturer. It's really no different than going to a grocery store and seeing the store's brand and the more well known one. The Trailer...
    view full answer...
  • Comparing The Total Weight Of A Fully Loaded 6,000 lb Axle Versus a Loaded 8,000 lb Axle
    Hello Eric. We do offer a fully loaded 6,000 lb axle part # e73SR that weighs about 136 lbs including the axle, hubs and brakes. Now, we do not carry and 8,000 lb axles, but we do carry a 7,000 lb axle part # e23SR that has the same axle diameter as an 8K axle, and the fully loaded 7,000 lb axle weighs about 150 lbs. Since we do not have any 8K axles I can't give you an exact weight, but it stands to reason that a fully loaded 8K axle of the same length would be about 10-15 lbs more than...
    view full answer...
  • Recommended Replacement Axle for an Al-Ko 4.4k Axle
    Arie, it looks like the closest axle we have that matches your axle measurements is the Trailer Axle w/ Electric Brakes # e73SR. This axle has a 6,000 lb weight capacity, has a hub face to hub face measurement of 86 1/2", a spring seat center to spring seat center measurement of 71 1/2". You might be able to use this axle with a longer hub face measurement, but you're going to have to reweld your spring seats with # TRSS300.
    view full answer...
  • Looking To Add Second Axle To Shorelander Pontoon Trailer
    Hello Larry, thanks for reaching out. We do carry replacement axles so we may have something that will work for you. I will need more information from you in order to make sure you get the right thing. Just please note that adding an axle does not necessarily increase your trailers carrying capacity. Mainly I will need to know the hub face length and spring center length of the current axle. I will also need to know the weight capacity of your axle. The new axle must be identical in size...
    view full answer...
  • Looking for 85 inch Trailer Axle
    Hey Paul, I wish we could help but we don't have that axle configuration. You would need to find a local trailer shop to you who can order in custom axles and give them those specs and they'll get you what you need.
    view full answer...
  • Replacement Axle for Keystone Laredo with 85" AL-KO Axles
    Hi Gerald; you can use an axle like the # e73SR but you want to make sure the capacity is high enough. Also, this is 86-1/2" long so it will stick out an additional 3/4" on either side. Since your spring center measurement is different you will have to cut off the spring seats and weld on # TRSS300 to match your measurement. We do not have an axle that is an exact match for your 85" length. Typically when you replace an axle you want to match the capacity and the length. I'm assuming since...
    view full answer...
  • Do You Offer Custom Axles, How do I Get My Spring Seat Where I Need Them?
    Hello Ryan, I am very sorry but we do not make custom axles, they come directly from the manufacturers already put together. We used to do custom axles many years ago, but there were too many wrong measurements sent in so we no longer offer that service. What I suggest is to get the Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs # e73SR and have a professional welder add qty 2 of the # TRSS300 where you need them. We do not suggest cutting off the...
    view full answer...
  • What Info Is Needed to Replace Trailer Axles
    Hey Michael, to replace trailer axles you need to know the distance from hub face to hub face and then also the distance between the spring seat centers. You might see if your current axles have brake flanges already as you might be able to just swap to new hub/drums and assemblies to add brakes. I attached a picture of what the flanges look like as well as a link to a page that has info on what's needed to add brakes to a trailer axle as well.
    view full answer...
  • Replacement for 5,100 Pound 86-1/2 Inch Long Overslung Dexter Axle
    When choosing a replacement axle you want one that is the same length. Since you have a hub face measurement of 86.51" a better choice would be an 86-1/2" axle. The # e65SR is an 89" axle so it is several inches longer. Also, you don't need a 6k axle, a 5,200 lb axle is fine. You can use a 6k axle but you need to keep in mind that this will not increase the capacity of your trailer. For an axle that is equivalent to the # e65SR I recommend the # e73SR, or if you just need the axle itself...
    view full answer...
  • Recommended Replacement Axle for a ALKO T44 Axle
    Hey Ken! The closest axle we have to those dimensions is the Trailer Axle w/ Electric Brakes item # e73SR. It has a 86-1/2" hub face and a spring-center-to-spring-center length of 71-1/2". You may be able to get away with the hub face being slightly longer depending on your fenders but you'll need to use the Spring Seat item # TRSS300 to replace the ones that come with the axle.
    view full answer...
  • All Parts Needed to Upgrade a 3,500 lbs 86-1/2" Hub Face Axle to a 6,000 lbs Axle
    Hey William, thank you so much for all of the information! To replace your axles, I recommend the Trailer Axle w/ Electric Brakes item # e73SR. This is a 6,000 lbs axle that come ready to install with pre-greased hubs and electric brake assemblies. The hubs have a 6 on 5-1/2 lug nut pattern so you will need to replace your stock wheels as well. The 5,000 lbs and 6,000 lbs axles have a different spindle size and there's no options for a 5 on 4-1/2 hub. Please note that the item # e73SR...
    view full answer...
  • How To Find The Axle Information For a 2020 Lance 2465 Travel Trailer For a Replacement Axle
    Unfortunately, I have no way to look up the parts installed on your 2020 Lance 2465. Based on the trailers weight it appears you are going to have a 4,400LB axle which we currently do not carry in any size. If you can provide me with an image of the axle tag on the rear section of your axle I can let you know if we have any larger axles you can use in its place as an upgrade.
    view full answer...
  • Are Brakes of etrailer 86-1/2 Inch, 6,000 lb Axle Self-Adjusting
    The electric brakes of the Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs # e73SR are not self-adjusting, they are manual-adjust. To get the same axle with hubs and self-adjusting electric brakes you'd need the Trailer Axle Beam with Easy Grease Spindles - 86-1/2" Long - 6,000 lbs # e33GR, Easy Grease Trailer Hub and Drum # AKHD-655-6-EZ-K, Electric Trailer Brake Kit - Self-Adjusting # AKEBRK-7-SA, and Mounting Hardware # BRKH12.
    view full answer...
  • Can the 6,000 Lb 86-1/2" Trailer Axle e73SR Be Flipped So the Spring Seats Are on Top
    The Trailer Axle with Electric Brakes part # e73SR has a slight arch to it which is designed to flatten when the trailer is loaded so you cannot rotate the axle to shift the spring seats on top. It's setup from the factory for underslung applications. In order to use this axle in an overslung application you'll need the Dexter Trailer Springs Over-Under Conversion Kit part # K71-385-00. This allows for a bolt-on swap without any cutting or welding required.
    view full answer...
  • How to Determine if Trailer Axle e73SR Can be Used as Replacement
    Yes, so long as your current axle is 6,000 lbs and has the same measurements, if you are switching to electric brakes you can use the Trailer Axle w/ Electric Brakes - Easy Grease - 6 on 5-1/2 - 86-1/2" Long - 6,000 lbs # e73SR. To determine if the # e73SR will work for you, you'll need to measure your current axle from hub face to hub face and spring center to spring center. The hub face measurement needs to be 86-1/2" and the spring center measurement should be 71-1/2".
    view full answer...
  • Do you Have a Trailer Axle With 85" Hub Face to Hub Face For 3,500LB Trailer Hubs?
    The closest axle hub to hub width we have to 85" is our 86-1/2" 5,200LB Axle # e73SR. This axle will not fit your current hubs you purchased but it does come with brakes and hubs already. To use the Hubs # AKHD-655-35-K & # AKIHUB-655-35-K you purchased and mount to the 85" hub face you would need to replace your axles with the Timbren Axle-Less Trailer Suspension # ASR3500S05. Otherwise you would need to visit a local axle dealer to have custom axles ordered. The Timbren has its own...
    view full answer...
  • Looking For Replacement Axle For 2012 CrossRoads Z-1 Travel Trailer
    Hey Thomas, thanks for reaching out. We may have the axle you need, but there is no way to look up your camper to know exactly which axles it was equipped with from the factory. RV manufacturers just aren't that specific with their online literature. The best way to narrow down what axle you need is with the information on the axle sticker. There should be a sticker on the axle tube that shows stuff like weight capacity, hub face (HF) length and spring center (SC) length. If you can send...
    view full answer...

Do you have a question about this Trailer Axle?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video by:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Michael B
Updated by:
Michael B
Employee Carrie F
Updated by:
Carrie F
Employee Ryan F
Updated by:
Ryan F
Employee Conner L
Installed by:
Conner L
Employee Mike S
Written by:
Mike S

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.