1. Trailer Axles
  2. Dexter Axle
  3. 2000 lbs
  4. 60 Inch Long
  5. Leaf Spring Suspension
  6. 48 Inch
Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs

Item # 20545I-ST-60-15
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Our Price: $280.65
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Shipping Weight: 33 lbs
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Dexter Axle Leaf Spring Suspension - 20545I-ST-60-15
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Round trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels. Lowest Prices for the best trailer axles from Dexter Axle. Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs part number 20545I-ST-60-15 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (3)
  • Q & A (16)
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  • Why etrailer?

Dexter Axle Trailer Axles - 20545I-ST-60-15

  • 2000 lbs
  • 60 Inch Long
  • Leaf Spring Suspension
  • 48 Inch
  • Idler Hubs
  • 5 on 4-1/2
  • Dexter Axle
  • Standard Spindles

Round trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels.


  • Round axle beam acts as part of your trailer's suspension system
    • Replace an axle on your trailer
    • Fabricate a suspension to fit your application
  • High-strength steel construction
  • Bend in axle creates zero camber angle for even road-to-tread contact across the width of your trailer's tires
    • Best for straight-line acceleration and steady, controlled towing
  • Underslung design - spring seats welded to underside of axle for mounting leaf springs
    • Low ride height makes it easier to load and unload your trailer
  • Straight spindle - no drop
    • Standard grease application
  • Spring seats and spindles are welded on
  • Cast iron idler hubs are sturdy and durable
    • Bearings, races, seals, grease caps, wheel studs, lug nuts, and marine-grade wheel bearing grease included
  • Limited 2-year warranty


  • Weight capacity: 2,000 lbs
  • Hub-face-to-hub-face length: 60"
  • Spring-center-to-spring-center length: 48"
  • Hub bolt pattern: 5 on 4-1/2"
  • Tubing outer diameter: 1-3/4"
  • Spindle size: 1-1/16"
  • Grease cap outer diameter: 1.986"
  • Wheel stud diameter: 1/2"
  • Wheel size: 12" - 15"

Bearing, Race, and Seal Information

  • Bearings
    • Inner bearing: L44649
    • Outer bearing: L44649
  • Races
    • Inner race: L44610
    • Outer race: L44610
  • Seal: 10-9
    • Inner diameter: 1.50"
    • Outer diameter: 1.987"

Axle Dimensions

Hub Face and Spring Center Measurements on Standard Trailer Axle

There are multiple ways to measure the length of an axle beam, but the hub-face-to-hub-face and spring-center-to-spring-center lengths are the most accurate. 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.

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. This axle beam comes with the spring seats welded on.

If you are replacing your trailer's axle, you should be able to figure out which type you need by determining your trailer's capacity, the bolt pattern of your wheels, the brake type and the aforementioned lengths.

Dexter Axles

Dexter axles are made of high-strength steel and come with spindles and spring seats welded on. The spring seats are attached to the underside of the axle so that the leaf springs (sold separately) can mount beneath the axle. The result of this underslung design is a trailer that rides a bit lower for quick and easy loading and unloading.

Each axle is manufactured to create a certain camber angle. This ensures that the angle of the wheels is correct for your towing needs. Because the primary concern when towing is maintaining controlled, in-line movement, each axle is made so that your trailer's tires will run along the pavement evenly, with contact across the width of the tread. The result is excellent straight-line acceleration for steady, in-line tracking. You might notice the bend near the center of the axle; this is what ensures the proper camber angle. Having the center ride a bit higher and the sides of the axle bent lower allows the axle to give just enough to compensate for the load.

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: 8 on 6-1/2 means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: 5 on 4-1/2 means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern - Side

Measuring the distance (D) from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

T20BTR-6048 Dexter Replacement Axle Beam - 60" Hub Face - 48" Spring Center - 2,000 lbs

8-258-5UC1 Trailer Hub Assembly for 12" to 15" Wheels - 2,000-lb Axles - 5 on 4-1/2 - L44649

L11404 LubriMatic Marine Trailer Wheel Bearing Grease - 16 oz. Can

Customer Reviews

Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs - 20545I-ST-60-15

Average Customer Rating:  4.7 out of 5 stars   (3 Customer Reviews)

Round trailer axle measures 60" from hub face to hub face and 48" from spring center to spring center. Includes idler hubs - with bearings, races, and seals - for 12" to 15" wheels.

- 20545I-ST-60-15

Product seems to be built well. I was missing a set of outer bearings that I had to get from a local tractor supply due to time constraints. They were missing when shipped to me. I have been happy so far with this product as I have pulled my home built teaardrop on it. I have traveled over 3k miles with it as well as a tire set I purchased from etrailer. Contender ST205/75R15 Radial Tire w 15" Good sturdy wheels and tires and they look good in person. 806604

- 20545I-ST-60-15

Excellent axle. Easy to assemble and perfect for replacing or building a new trailer. 443674

- 20545I-ST-60-15

Great stuff, great help, great prices... my new go to trailer vendor 183732


Ask the Experts about this Dexter Axle Trailer Axles

  • Choosing a new Axle and Wheels for Teardrop Camper
    In order to choose a replacement axle you will need to know your current axle's capacity as well as its hub face to hub face dimension, which is 89" (A) in the example photo, and spring seat to spring seat dimension, which is 74" (B) in the photo. From there, you'd be able to find the axle you want; I recommend getting a replacement that comes with hubs for a complete fresh start with your suspension system. Once you have the axle you want, you can concentrate on wheels. For example,...
    view full answer...
  • Leaf Springs and Hanger Kit for 2,000 Pound Dexter Axle
    You could mount springs to the top of Dexter axle # 20545I-ST-60-15 but you would have to weld on new spring seats # TRSS175. The springs seats that come with the axle are welded to the bottom. You can't flip the axle over because then the natural bow in the axle would be facing the wrong way, the tires would stick out at the bottoms, and the capacity would be diminished. The taller a trailer is the more susceptible to sway it becomes because the center of gravity is higher. Just something...
    view full answer...
  • Replacement Trailer Axle with 62" Hub Face and 48" Spring Perch Measurement
    Unfortunately, we do not have the outside bearing with an inner diameter of .75". The smallest bearing we carry has an inside diameter of 1". The only option I can offer you is to replace the axle which in some cases is also the best option. If you can give me your axle length (hub face to hub face) and capacity I would be able to offer you a replacement.
    view full answer...
  • Recommended Trailer Axle For Haul Master 4x8 Foot Trailer
    Replacing your existing axle with the Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # 20545I-ST-60-15 or Dexter Trailer Axle with Idler Hubs - 4 on 4 Bolt Pattern - 60" Long - 2,000 lbs # 20440I-ST-60 will work fine as long as the Hub-face-to-hub-face length is 60 inches and spring-center-to-spring-center length is 48 inches. This will give you a higher capacity axle but you will still be limited to whatever weight capacity the weakest component of...
    view full answer...
  • Can Underslung Axles Be Used on a Small Homemade Trailer
    People run underslung trailer axles all the time. We have yet to hear of someone with an issue due to it. Especially on a lighter trailer like what you are building. If that is the route you would prefer to go with the axle configuration you would be just fine. A 1,000 lb spring like the part # SP-177275 is a slipper spring that would work well considering the weight of your trailer. Since trailers don't typically run shocks they can be a bit bouncy, especially when unloaded.
    view full answer...
  • Can I Put Larger Wheels and Tires On My Harbor Freight Trailer By Replacing the Hubs?
    I don't think that your wheel size (or lack thereof) has anything to do with the bearings on your HF trailer drying out as much as it is likely that the seal blew out from overfilling the grease or poor installation. This isn't uncommon when dealing with "bargain" brands and upgrading components is a good way to get a more reliable trailer. You could replace the hubs on the trailer with hubs that are able to handle a larger wheel/tire combo- but you may run into trouble with clearance to...
    view full answer...
  • Availability of 60 inch Long Trailer Axle for a Jon Boat
    Trailer axles normally have a slight bow to them to help with the tire alignment when loaded. It would take quite a bit of force to flatten the axle out to give it an additional inch of length. Are you measuring right to the center of the hangers and not to the outsides? It is also possible that your axle is just a bit longer. There are several different axle dimensions out there and yours doesn't necessarily have to match up with what we sell. Does the axle seem like it's too long...
    view full answer...
  • Availability of Trailer Axle that is 60 inches Hub to Hub and 48 inches From Spring Seat to Seat
    All trailer axles are going to have the bow in them that you are referring to. This is so that when the weight of the trailer is put on them they flex slightly and then the axle ends up being flat. Without the bow in them the alignment of your wheels/tires would be off. The part # 20545I-ST-60-15 matches your dimension specs and has a 2,000 lbs capacity. It would be the best option we have.
    view full answer...
  • How to Choose Replacement 2000 lb Trailer Axle
    To see if any of the 2000 lb axles we offer will work for you, I'll need to know the center spring seat to spring seat distance (which you've kindly provided) as well as the hub face to hub face dimension. I've provided a diagram showing how to take the measurements. The closest thing I have to the dimensions you provided is the # 20545I-ST-60-15 which has a 60 inch hub face to hub face dimension and a 48 inch spring center distance between spring centers. If that won't work for...
    view full answer...
  • Recommended Replacement Axle For 2,000 lb Capacity Escort Boat Trailer
    The closest through axle we have is the Dexter Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs # 20545I-ST-60-15. This is obviously 1 inch shorter and has springs centers at 48 inches apart. If the spring locations or the 1/2 inch on each side will cause problems, then I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545. This comes with the 5 on 4-1/2 bolt pattern hubs as well, but does...
    view full answer...
  • Best Option for Replacement 2,000 lb Axle System for 58-1/2 Inch Axle on Utility Trailer
    Thank you for that detailed information about your axle length, and while we do have an option for you, though the Dexter Trailer Axle with Idler Hubs # 20545I-ST-60-15 will not work for you because both the spring center to spring center and hub face to hub face dimensions are too long for your trailer. Most importantly, this means that the axle won't be able to bolt up properly, but also that if your trailer has fenders it would not cover the wheels. What I highly recommend instead...
    view full answer...
  • Will the Hubs Included with Trailer Axle 20545I-ST-60-15 Hold Up at Highway Speeds
    The hubs included with trailer axle # 20545I-ST-60-15 will work great at highway speeds, surface road speeds and everything in between. But you have to also consider the tires used. Some trailer tires are rated for a maximum speed of 65. Others are rated higher; up to 81 miles hour. It just depends on the tire. If you can tell me the tire size you need I can recommend some tires for you.
    view full answer...
  • Axle Replacement on 4x6 Trailer for 6 Bolt Hub Compatibility
    The only axle option we have for a 4x6 foot trailer to get you the bolt pattern you desire is the Universal Fit Timbren Axle-Less Suspension System. This will not have springs, but will instead use Aeon Rubber suspension that is integrated in the assemblies. Then if you don't have a cross brace in the axle location you will need to use a 2 inch square tube (not included) in the integrated holes of the assemblies. I recommend the Timbren Axle-Less Trailer Suspension System - Spindle...
    view full answer...
  • Replacement Axle for Harbor Freight Utility Trailer
    Since you want to change your trailer hubs to the 5-on-4-1/2 bolt pattern I suggest you select a 60-inch axle kit that includes idler hubs, such as one of the two kits shown on the linked page. These two 2K-rated axle kits include 5-on-4-1/2 hubs, bearings, races, seals, lug nuts and bearing grease. Kit # 20545I-ST-60-10 works with 8- to 10-inch wheels and kit # 20545I-ST-60-15 works with wheels from 12- to 15-inches diameter. If you trailer's existing axle is installed below your leaf...
    view full answer...
  • Trailer Axle With Spring Center To Spring Center Measurement Of 48
    I do have an option that may work for you however, none of our trailer axles have a spring center to spring center measurement of 48" and a hub face to hub face measurement of 57.5". Therefore, no, the CE Smith Trailer Axle w/ Idler Hubs part # CE33201GA-HUB will not work for you as the spring center measurements are too short for your current application. I do have a trailer axle with spring center to spring center measurement of 48" in the Dexter Trailer Axle with Idler Hubs part #...
    view full answer...
  • Recommended Axle With Hubs For Compatibility With 8 Inch Wheels For Boat Trailer
    Unfortunately we don't have any hubs that fit your current spindles. I recommend replacing your axle and that will be determined based on the length of your axle and capacity needed. For a galvanized steel option ideal for a boat trailer, I recommend the CE Smith Trailer Axle w/ Idler Hubs - 5 on 4-1/2 Bolt Pattern - 57-1/2" Long - 1,800 lbs # CE33201GA-HUB. Another option is the Dexter Trailer Axle w/ Idler Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs # 20545I-EZ-72-15...
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Written by:
Lindsey S
Video Edited:
Dustin K
Updated by:
Sarah W
Updated by:
Mike S

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