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

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

Item # SP-252275
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Trailer Leaf Spring Suspension
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Universal Group Springs - SP-252275
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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. Lowest Prices for the best trailer leaf spring suspension from Universal Group. 5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long part number SP-252275 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (8)
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Universal Group Trailer Leaf Spring Suspension - SP-252275

  • Leaf Springs
  • Springs
  • Slipper Springs - 2-1/2 Inch
  • 30-1/2 Inch Long
  • 10000 lbs
  • Universal Group

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.


Features:

  • Leaf spring acts as part of your trailer's suspension system
    • Provides attachment point for your trailer's axle
  • Multiple leaves allow flexibility to absorb road shock
    • Allows for a smooth ride
    • Reduces wear and tear on trailer
    • Ensures level ride on bumpy and uneven surfaces
  • Sturdy steel construction
  • Bronze bushing included
  • Pre-mounted hangers or aftermarket hanger kit (sold separately) required for installation
    • Eye of spring attaches to hanger mounted on trailer frame
    • Slipper end slides into hanger or equalizer


Specs:

  • Quantity: 1 leaf spring
  • Spring capacity: 5,000 lbs
  • Axle capacity: 10,000 lbs
  • Length from center of spring eye to end of spring: 30-1/2"
  • Spring width: 2-1/2"
  • Eye diameter with bushing: 3/4"
    • Eye diameter without bushing: 1"
  • Leaf thickness: 7/16"
  • Number of leaves: 5
  • Additional dimensions: see table


Radius End Slipper Spring

Part NumberABCDEF
SP-25227513-5/8"26-7/8"30-1/2"14-5/8"18-3/8"3-7/8"


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


Leaf springs are an integral part of your trailer suspension system. The leaf springs provide the attachment points for your trailer's axle, suspending it from the frame of your trailer. Each spring flexes to absorb road shock as you travel, allowing the axle to move somewhat independently of the rest of your trailer. This helps to reduce wear and tear on the trailer and also ensures a smooth ride.


Slipper leaf springs attach to hangers that are welded onto your trailer. The eye of this spring will attach to the front hanger with a suspension bolt. The flat slipper end of the spring will slide into the rear hanger. If you have a tandem- or triple-axle trailer, the slipper end will slide into the equalizer that connects multiple springs. The shape of the slipper end of a leaf spring may vary slightly due to differences among trailer manufacturers. Because of this, it's important to check your leaf spring's slipper end before purchasing a replacement spring.


To mount this spring, you will need hangers, a suspension bolt, and possibly a spring keeper bolt, depending on the design of the rear hanger. If you are simply replacing a spring, you may still have hangers welded onto your trailer, but it would be wise to replace the bolts as they can experience wear. It is also recommended that you replace the other leaf spring in your setup at the same time. Because springs can sag and elongate as they wear, this new spring may not exactly match the old one, and the alignment of your trailer could be affected.


If you are fabricating a trailer, you will need to purchase a hanger kit for installation. To determine the type of hanger kit that you need, you must know the specific type of leaf spring that you have, as well as your axle capacity. Depending on the hanger kits used with them, springs can be configured to work for single-, tandem- or triple-axle applications. Hangers and other suspension components can also be purchased separately if there isn't a complete kit that works for your setup.



UNA-252 Universal Group Slipper Trailer Leaf Spring - 5 Leaf - 5,000-lb Capacity

Replaces 72-21





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

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




Video Transcript for Universal Group Trailer Suspension - Leaf Spring Suspension - SP-252275 Review

Today, we're going to take a look at the five leaf slipper spring for ten thousand pound trailer axles. Now this is a strong, durable steel construction. It is designed to flex to absorb road shock providing nice smooth ride. Helps reduce wear and tear on your trailer, and it will ensure a level ride on bumpy and uneven surfaces. Mounts to the trailer frame with hangers or a hanger kit, which we do sell separately, and they're usually listed on this product page as a related product. If you'll notice, on the eye end it does include the bronze bushing. A few specs on this, the spring capacity is five thousand pounds, so when this is used with a spring on the other side of the axle, it will meet your axle capacity of ten thousand pounds.

Does have a number of five leaves, one, two, three, four, five. Now the spring length, which is measured from the center of the eye to then end of the spring. Put a ruler on that, center, to very end is thirty and a half inches in the length. Now the width, let me just move this so we can see it better. The width on the spring is right at two and a half inches wide.

The eye diameter, which is the inside measurement in there, is three quarters of an inch, and this part is for quantity of one spring. One last note I do want to mention is that to ensure proper axle alignment and suspension performance, these leaf springs should always be replaced in pairs. That should do it for the review on the five leave slipper spring for ten thousand pound trailer axles.


Customer Reviews

5-Leaf Slipper Spring w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long - SP-252275

Average Customer Rating:  4.8 out of 5 stars   (8 Customer Reviews)

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.

- SP-252275
by:

I am very happy with the transaction and received my complete order in just a few days. Easy to order from etrailer



- SP-252275
by:

It fit perfectly.



- SP-252275
by:

the parts were easy to install. seemed to do a good job. they have lasted about a year and its about time to rebuild again. i would have thought they would last more than a year but then considering my trailer is loaded 6 days a week and my gross weight is just alittle over 46000. i will be ordering more parts again soon



- SP-252275
by:

Very knowledgeable staff they assisted me on figuring out the correct part I needed. Installation went flawlessly. Thanks again.



- SP-252275
by:



- SP-252275
by:

I had ordered the wrong spring on line and customer service was very helpful to help me return the wrong ones and get the correct ones coming. Great Job, thank you!



- SP-252275
by:



- SP-252275
by:

Great springs great deal. Thanks


8
8

Ask the Experts about this Universal Group Trailer Leaf Spring Suspension

  • Selecting Replacement Slipper Springs
    The linked page will display all slipper type leaf springs we offer. You will want to confirm your axle weight capacity as well as the spring width and length as you select replacements. You will also want to replace both springs on each axle to ensure the trailer tracks properly. We offer several slipper springs in a 30-1/2-inch length including the 5-leaf spring # SP-252275 for 10K axles and the 7-leaf # SP-270275 for 15K axles. You may care to refer to the linked article on trailer...
    view full answer...
  • Can 10K Leaf Springs be Upgraded to 3 Inch Wide 12K Springs for Gooseneck Trailer
    You can definitely upgrade the leaf springs from a 5-leaf 2-1/2" wide system to a 6-leaf 3" wide system but you'll basically need to swap out your whole suspension system. It's also good to note that even if your leaf springs are rated for a higher capacity it won't increase the weight rating of your axles. We don't recommend overloading the trailer but that's obviously up to the end user so I'll let you know what parts you need so you can install the larger springs. On your axle you need...
    view full answer...
  • Differences Between Universal Group 5-Leaf Leaf Springs and Recommended U-Bolt Kit for 5 Inch Axle
    The only difference that I'm seeing between the 5-Leaf Slipper Springs w/ Radius End for 10,000-lb Trailer Axles - 30-1/2" Long # SP-252275 and # UG54FR is that the UG54FR has about an inch thicker cushion where the bolt installs in the eye. Sometimes demand and popularity play a role in the pricing of things online in general so I imagine that has a bit to do with it since these are practically the same exact thing. I would go with the more cost-effective leaf spring in your case. We do...
    view full answer...

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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Alexander C
Written by:
Alexander C
Employee Jenny M
Updated by:
Jenny M

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