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  1. Trailer Leaf Springs
  2. Universal Group
  3. Slipper Springs
  4. 30-1/2 Inch Long
  5. 10000 lbs
  6. 5 Leaf
5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long
Universal Group

5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long

Part Number: UG54FR
In Stock
$127.96
Trailer Leaf Springs
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Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 10,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 3/4" inner diameter. Great Prices for the best trailer leaf springs from Universal Group. 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long part number UG54FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Universal Group Trailer Leaf Springs - UG54FR

Highlights

  • Supports 10,000-lb Axles: Handles heavy trailer loads while keeping your ride level.
  • 30-1/2" Long, 2-1/2" Wide: Sized for proper fit and stable axle alignment.
  • 5-Leaf Design: Flexes to absorb shock and smooth out rough road impacts.
  • Bronze 3/4" ID Bushing: Provides a durable pivot point that resists wear.
  • Sturdy Steel Construction: Withstands high mileage and heavy hauling stress.
  • Radius-End Slipper Style: Slides easily into hangers or equalizers for secure travel.

Features to know about

Smooth, Controlled Ride on Rough Roads: 5-Leaf Spring Flexes to Absorb Shock

Long hauls and uneven roads can rattle a trailer and its cargo. This 5-leaf slipper spring flexes just the right amount to resist shock and smooth out the ride. With a spring capacity of 5,000 lbs and an axle capacity of 10,000 lbs, it keeps the trailer level and steady so you’re not fighting bounce or sway on every bump.

Strong Connection that Stays True: 30-1/2" Long Radius-End Slipper Design

A reliable suspension starts with proper geometry. This spring measures 30-1/2" from the center of the eye to the end of the radius-style slipper, giving the axle a precise mounting point that tracks straight. The front eye attaches securely to a hanger on the frame while the slipper end slides smoothly into the rear hanger or equalizer for consistent movement under load.

Built to Last through Heavy Use: Steel Leaves with Bronze Bushing

Each of the five 7/16" thick steel leaves works together to carry heavy loads without sagging. The included bronze bushing with a 3/4" inner diameter protects against wear at the pivot point, holding grease longer and cutting down on squeaks or play that can show up with nylon bushings.

Ready for Precise Suspension Setup: Fits Standard 2-1/2" Wide Configuration

This spring’s 2-1/2" width makes it a direct fit for standard hangers and hardware used in heavy-duty suspension setups. Whether you’re replacing worn parts or fabricating a new system, matching these measurements ensures proper axle alignment and dependable performance mile after mile.

Specs

Weight and Capacity

  • Spring capacity: 5,000 lbs
  • Axle capacity: 10,000 lbs

Dimensions

  • Length from center of spring eye to end of spring (unloaded): 30-1/2"
  • Spring width: 2-1/2"
  • Eye diameter with bushing: 3/4"
  • Eye diameter without bushing: 2"
  • Leaf thickness: 7/16"

Construction

  • Quantity: 1 leaf spring
  • Number of leaves: 5
  • Additional dimensions: see table
Radius End Slipper Spring

Table Data

  • Part Number: UNA-298
  • A: 13-1/2"
  • B: 28"
  • C: 30-1/2"
  • D: 14"
  • E: 18"
  • F: 4"

Note

  • Important: To ensure proper axle alignment and suspension performance, leaf springs should always be replaced in pairs.

UNA-298 Universal Group Slipper Trailer Leaf Spring - 5 Leaf - 5,000-lb Capacity

Replaces 72-80





Video of 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Detailed Breakdown of the 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles

Ellen: Hey everyone, I'm Ellen here at etrailer.com. We're going to be taking a quick look at the Five Leaf Slipper Spring with your radius end for your 10,000 pound axles. So this is a great addition to your trailer to make sure that you have that spring to take up any of that road shock and help to improve the overall ride. Also helps to reduce the amount of wear and tear on your trailer overall. It's a good idea to always replace the slipper springs or your leaf Springs in pairs. So you'll want to get an additional spring to this.

So you can replace both of those at the same time and for as many axles as you need to replace. So let's take a closer look at it and make sure that this is going to be the right fit for your particular application. So you can see it as a slipper type spring.So that's going to slip over the end of your hanger or your equalizer and provide that movement that you need as that axle travels. It does have the five leaf designs that helps to absorb a lot of that shock from the road and help to level things out and keeping things even on bumpy and uneven pavement. The other end here is going to be our radial end.

That's going to have our eye. It does have a bronze bushing already installed. So that's one less thing we have to do, but you do need to get a hanger kit or use pre mounted hangers to actually install this in place on your trailer. As far as the specs with this, again, it does have a spring capacity itself of 5,000 pounds. So it works with a 10,000 pound axle.

Whenever you have both of these, that'll get you to that 10,000 pounds.The length from the center of the eye to the end of the spring. So from the center here to the very end of the spring, it's going to be about 30 and a half inches, 30 inches and one half inch. Then the spring width is two and a half inches. The eye diameter with the bushing in place is three quarters of an inch. Without the bushing, it would be two inches.

The leaf thickness each one of these is seven 16ths of an inch. Again, we have five leaves it all, and if you need to see any additional measurements, we do have those listed out in a table on the product page at etrailer.com. That's pretty much it for our look at the Five Leaf Slipper Spring. I hope this has been helpful in deciding if this is going to be the right piece for you. We do have a lot of other accessories, including hangers and equalizers here at etrailer.com. So if you need to pick those up, check us out. Thanks for watching.

Customer Satisfaction Score:

Ratings & Reviews

4.8

643 reviews
5 Stars
(567)
4 Stars
(60)
3 Stars
(3)
2 Stars
(5)
1 Star
(8)
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by:
very quick response and fast shipping!
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I ordered wrong springs at first and got a hold of these guys and they took really good care of me and got correct springs to me in just a few days. Thanks again
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Worked great!
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Crazy fast Delievery. Exactly as the description describe.
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A great replacement set of springs for my gooseneck trailer.
by:
Lost in shipping, ship dates where not correct. Order a product paid for only got half the order and no ore in stock. Wait a month to gwt more. Told customer parts be in, in a few days, now it is a week. Prob done with etrailer
by:
I was assisted by Nick and Katie of etrailer. Both were knowledgeable and helped me spec exactly what I needed. Slip springs and accessories for a trailer that is no longer made. Great attitudes and genuinely friendly to boot. The two of them are exactly what we all hope to get when we need factory help on the phone. This is my third order from etrailer. nuff said!
Fred G. profile picture

Fred G.

1/14/2016

Kit was easy to install and has worked out fine. Video was a help.Your customer service and support was excellent.I have four different trailers, and have purchased other items from you for them. All good experiences. This kit revived my old ice boat trailer.

by:
Great products great prices super fast service I orderd my stuff late in the afternoon an before I went to bed I got a shipped email and I had my parts in just a few days also check out their low price guarantee so far I like etrailer good job guys
Anthony J. profile picture

Anthony J.

1/26/2016

Great

by:
I have purchased a number of items from etrailer.com such ans leaf springs, axle and hub assembly, and other items as well, I recently finished the trailer and it is now on a cross country trip. The trailer has just finished a 3,000 mile leg of this trip and I am told it was so smooth that it could not be felt by the towing vehicle.

Every product I have ordered from etrailer.com has been top quality and has worked extremely well. I would come back again for any of my future trailer needs.
by:
The Reline trailer suspension fit perfect on my small sailboat trailer. It was easy to install and installation instructions video was great for a first timer like me to do the job. Great customer service support helped me out when the first suspension was too big for my trailer. I return it and got the right size. I am very satisfied with the product and the price on the suspension.
by:
2,000 lb. GVW utility trailer came stock with set of two-leaf springs. No wonder it sagged when loaded to 1,500 to 2,000 lbs.
So I ordered a set of four-leaf springs. The description of the springs was very thorough so I was very sure they were what would work and install easily. When the new springs arrived it only took ten or fifteen minutes per side to easily make the switch to the new four-leaf springs. By cleaning all surfaces and going to all steel shorter lock nuts I was even able to re-use the old U-bolts and other hardware. Haven't used it yet (still repairing lights) but I'm sure there'll be a noticeable difference for the better! Thanks e-trailer!
by:
Replaced rusty springs on a 14' skiff trailer. Fit perfect, DIY for cheap in the driveway, it would've been easier with an impact wrench. Take their advice, etrailer is the best for a reason, get ALL NEW HARDWARE TOO!! I broke several fasteners removing them, if the springs are bad, so is the hardware. I have done three hitches and a set of leaf springs now with these folks. Their install videos and expert advice made it a breeze to save probably a couple thousand in labor at a shop.
by:
Purchased this in pair for my new to me kayak trailer and they are awesome. The ones that came with my trailer were rusted bad and two leafs only. These are three leafs giving it more load capacity and way cheaper then any of my local big box stores and trailer parts store here in Miami FL. If you need a pair for your trailer do not hesitate and contact etrailer their awesome website and outstanding customer service will get you what you need trust me this is my second time purchasing with them and they have earn my two small trailer business. Oh and if you are not sure about what you need just contact them. Mr. Jameson C helped me, he send me all the details and links of what I needed with details that's CUSTOMER SERVICE thank you guys God bless....
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I have an old 1993 NUWAY 13848 utility trailer and on a cross country trip, my leaf spring broke after hitting a pot hole. I was lucky to make it home safely. E-trailer had replacement spring in various load ratings. My original trailer was a 2 leaf spring rated for 500 lbs (1000 for trailer). E-trailer has springs that were 3 leaf rated for 750 lbs (1500 for trailer). The price was great and the delivery was super fast. Springs wear out from a lot of use and it is best to replace them especially after hitting pot holes for 25 years and 20,000 miles with trailer loaded at 60 to 90% capacity. An old spring may look good but has a limited life with years of use. Oh yes, I replaced both sides and the nuts on the U bolts are fully engaged and torqued. Replacement parts all fit perfectly. I am glad "etrailer" carries everything you need at a super great price.
by:
The Slipper spring on a Calkins Trailer (23 yrs old) disintegrated and It took a while to find the replacement because Calkins in now defunct. The E trailer parts arrived in a few days . Everything went well except that the U bolt treads were too short so I had to jury-rig the second plate underneath so that the clamps tightened round the Axle and it is working fine. The first photos show Pre and Post the third photo shows that the axle itself is also corroded and though still strong, I reinforced it with Carbon fiber.
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good service and quick delivery
by:
I love this product for many reasons. Not only does it take the weight it’s meant for, but it also keeps my trailer steady while and not bouncing around. I have put about 2200 miles in them in about a year (personal trailer and moved from state), and they still feel brand new. Great product and VERY easy to install.
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See what our Experts say about this Universal Group Trailer Leaf Springs

  • Looking For Leaf Springs For A 2003 Ford 450 Super Duty Class C Motorhome
    Thanks for reaching out, Raymond. We do have a big selection of leaf springs, but what we carry is intended for trailers and not for motorhomes. Our longest leaf spring is the 5-Leaf Slipper Spring # UG54FR which is 30-1/2" long. So nowhere even close to what you are needing. Your best bet for that will be to reach out to a dealership to see if they can point you in the right direction.
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  • Replacement Slipper Springs Measurements and Different Ends
    I have included a picture below as measurements for slipper leaf springs are different than double eye leaf springs. A=Eye center to Spring Pin length B=Eye center to end of spring C=Eye center to spring pin center following spring D=Spring pin center to tail of spring following spring E=Spring Height from eye center to axle mount. You will also want to verify your weight rating, spring width and if it has a radius end, flat end or hook end. Our only 2-1/2" spring currently is the...
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  • Installation Kit for UG54FR Trailer Slipper Spring on a Tandem Axle Trailer
    The 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long # UG54FR, is a slipper style spring. Double eye springs would have an eye on each end of the spring. To build a double axle trailer with these springs you will need one of two tandem axle hanger kits, depending on the spacing you need between the axles for the wheel and tire combination you plan on using. The Tandem Axle Hanger Kit, # HAP-158-258-02, will give you 42-1/4 inches on center between the axles...
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Do you have a question about this Trailer Leaf Spring?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Alexander C
Written by:
Alexander C

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