1. Trailer Leaf Spring Suspension
  2. Universal Group
  3. Leaf Springs
  4. Springs
  5. Slipper Springs - 1-3/4 Inch
  6. 24-5/8 Inch Long
4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long

4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long

Item # SP-179275
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Trailer Leaf Spring Suspension
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Universal Group Trailer Leaf Spring Suspension - SP-179275
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Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter. Lowest Prices for the best trailer leaf spring suspension from Universal Group. 4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long part number SP-179275 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (78)
  • Q & A (32)
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  • Why etrailer?

Universal Group Trailer Leaf Spring Suspension - SP-179275

  • Leaf Springs
  • Springs
  • Slipper Springs - 1-3/4 Inch
  • 24-5/8 Inch Long
  • 2000 lbs
  • Universal Group

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" 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
  • Nylon 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: 1,000 lbs
  • Axle capacity: 2,000 lbs
  • Length from center of spring eye to end of spring: 24-5/8"
  • Spring width: 1-3/4"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 11/16"
  • Leaf thickness: 1/4"
  • Number of leaves: 4
  • Additional dimensions: see table


Radius End Slipper Spring

Part NumberABCDEF
SP-17927511"22-11/16"24-5/8"12"14-1/2"3-3/4"


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-179 Universal Group Slipper Trailer Leaf Spring - 4 Leaf - 1,000-lb Capacity

Replaces WIH4






Customer Reviews

4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long - SP-179275

Average Customer Rating:  4.9 out of 5 stars   (78 Customer Reviews)

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.

- SP-179275
by:

Easy to install. 576728



- SP-179275
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. 349500



- SP-179275
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! 547118



- SP-179275
by:

Everything from start to finish with etrailer and the leaf springs I purchased went perfectly! The search for the product was seamless, ordering simple, delivery quick, and they fit perfectly! 865224



- SP-179275
by:

Fit perfectly and very easy to change out. Still in great shape a year later. 815549



- SP-179275
by:

Sorry no photos. All items arrived in a short time after ordering. All items were correct.Support was there if needed. This is our second order through etrailer. Would highly recommend their business and associates. 815689



- SP-179275
by:

I am very impressed with the whole process from the beginning to the end. I was able to find the 4 leaf spring for my trailer and after comparing ALL the dimension to my broke leaf spring, it was an exact match. It was recommended to replace both sides, so I ordered twp leaf springs. I had several choices of shipping and I select the one that best fit my schedule. The leaf springs arrived on the designated date. The replacement install went flawless because the new leaf springs were an exact part swap out. etrailer.com will always be my first place to look for any parts. 806634



- SP-179275
by:

Seems ok but haven't used them. 807978



- SP-179275
by:

easy install, well made and exactly what was described. 801184



- SP-179275
by:

The parts fit great easy to put on fast shipping very good video to help you 100% very good products 801571



- SP-179275
by:

Looking forward to using these on a snowmobile trailer that I'm rebuilding. 785775



- SP-179275
by:

Rock solid parts. Easy to all needed components with the online ordering. 785760



- SP-179275
by:

These springs were a great replacement for my trailer. The original 1000-lb springs carried the load, but they were stiff with lighter loads. These new springs feature additional leafs that allow the trailer to ride more smoothly with lighter loads, yet remain stable with heavier loads. They were economical and very easy to install, too. One photo shows the difference between my original 1000-lb spring and this product. 735959



- SP-179275
by:

my experience was so simple and the product arrived in a timely manner 734431



- SP-179275
by:

Just what I needed for my 20 year old utility trailer. Perfect fit. 732792



- SP-179275
by:

Very good quality for the price. Shipping costs beat competitors that I researched. 728976



- SP-179275
by:

Great product was a great replacement for my worn out Springs on my Magic Tilt boat trailer or year later still holding up well would definitely purchase them again 720381



- SP-179275
by:

Top grade sevice and product. 713432



- SP-179275
by:

Works great, no issues, great price, and was easy to install. Thanks guys! 703202



- SP-179275
by:

Excellent quality and fast shipping. Thanks 677304



- SP-179275
by:

Great quality! 675034



- SP-179275
by:

I was in need of new flipper springs contacted etrailer and they put onto a great spring it handles my quad wood loads with ease one year later the product is going strong Great team at etrailer just tell them your problem and they will fix it Thanks Brian m 670897



- SP-179275
by:

Wow, I had no idea of how bad my original spring were till I installed these. Boat tracks straight behind the truck now which makes it much easier to launch. 662060



- SP-179275
by:

I rate the company itself , shipping and parts availability 5 stars. These springs i give two stars. I had to take two sets of leaf spring and make them into one set so they will hold up the trailer. This included complete disassembly , and rebuild of the new springs after installing them the first time. The job took me twice as long. If I had not needed the trailer the next day I would have returned them. These springs are closer to 1500lbs total instead of 2000lbs. 661363



- SP-179275
by:

great product fit exactly as described! 644096


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Show More Reviews

Ask the Experts about this Universal Group Trailer Leaf Spring Suspension

  • Replacement 1-3/4 Wide 25-1/2 Long Slipper Leaf Spring
    The closest thing we have to those dimensions is the 3-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles # SP-179275. This measures 24-5/8" from the center of the eye to the end of the hook. Over time leaf springs can flatten out so typically a replacement leaf spring will be a little shorter than the current one. A 1" difference is a bit longer than normal, but if your leaf springs are pretty flat then I would venture to say this is what you're looking for. Just make sure the...
    view full answer...
  • Hanger Kit to Install Leaf Spring on Trailer that Has Slipper Springs
    You could pretty easily install the springs you have but you will need to use a single axle trailer hanger kit like part # APS4 as the bushing sizes and hangers you have now won't work with the spring you have part # SP-113275.
    view full answer...
  • Can Slipper Spring SP-179275 Replace 25 inch Flat Slipper Spring on Utility Trailer
    Yes, the 4-Leaf Slipper Spring w/ Radius End # SP-179275 that you referenced will fit and work well on your trailer that currently has flat slipper ends. The capacity and length matches well so this would be a really solid choice. I attached an install video for these springs for you to check out as well.
    view full answer...
  • Replacement 1-3/4-Inch-Wide Trailer Slipper Leaf Springs
    It sounds like your trailer uses slipper-type leaf springs like # SP-179275. This and other similar 1-3/4-inch-wide springs are shown on the linked page. You will want to confirm the axle's weight rating; this usually appears on a sticker or plate on the axle itself. You need to choose a properly-rated spring so that the suspension it neither too stiff nor under-rated for the weight load. You will then want to choose a slipper spring of the appropriate length. Do note that a well-worn...
    view full answer...
  • Replacing Suspension Hardware For Harbor Freight Single Axle Trailer With Slipper Springs
    The first thing you will need to determine is what the weight capacity of the trailer is. There should be a plate or sticker on the trailer or on the axle with those numbers. We offer a 2-leaf slipper spring, part # SP-179275, for 2,000-lb axles. I have attached a drawing of a leaf spring with the dimensions for the SP-179275 leaf spring you can check out. These springs measure 1-3/4 inches wide and have an eye diameter of 9/16 inch. The U-bolt mounting kit for these springs is...
    view full answer...
  • Hanger Dimension Recommendation for Installing Slipper Springs SP-179275
    Yes, you would want the hangers used for installing the Slipper Springs part # SP-179275 that you referenced to be 23-1/8 inches apart when installing these springs on your trailer. I attached a review video for you to check out and a help article on slipper suspension systems as well.
    view full answer...
  • Recommendation For Softening The Ride Of Small Trailer Carrying 2 or 3 Kayaks
    I may have a solution that will save you some money and work. I spoke with our tire expert and his suggestion was to lower the tire pressure a little until you are comfortable with the way the trailer handles and rides. We always recommend using the maximum tire pressure and to air the tires up when they are cold. This is to make sure the tires are capable of handling the maximum load they are rated for. In your case, since you said you are limiting the load you plan on carrying, you...
    view full answer...
  • Recommended Slipper Springs for a 2011 Triton LTWC11 2,500 Pound Jet Ski Trailer
    To determine the correct slipper spring for your 2011 Triton jet ski trailer, you will need to know the width of the spring, the length of the spring, and the weight rating of the axle on your trailer. Based on your measurements you provided about your 2011 Triton LTWC11 2,500 pound jet ski trailer, I think your best option would be slipper springs by Redline # SP-039275. This leaf slipper spring is 30-1/4 inches long and 1-3/4 inches wide. It's designed to work on trailers with 3,000...
    view full answer...
  • Difference Between Amount of Leafs in Slipper Spring Packs for Trailer Suspension
    Some people prefer spring packs with greater amounts of leaves as that in the unlikely event one of them break there are several others to back it up. But the thinner the leaves (to create a multi-leaf spring pack) the more likely one would be to break. The other thing to consider is that a thicker spring pack would raise the trailer up a bit if the spring was mount above the axle. For a 2,000 lb axle we only have one slipper spring available as part # SP-179275 which has 4 springs.
    view full answer...
  • Needing Replacement Slipper Springs for Older Cox Boat Trailer
    None of the slipper springs we offer meet the dimensions you provided. You'll probably need to get a set of springs of the proper capacity and relocate the spring hanger and slipper. Given your axle diameter, you most likely have have a 2000 lb axle. For spring hangers, you'll want to use a front hanger that match the height of your existing spring hanger. I'll link you to our selection of slipper spring hangers. As far as the axles go, unfortunately none of the off-the-shelf axles...
    view full answer...
  • Slipper Spring Recommendation for a Kayak Trailer
    All things being equal there really isnt an advantage to going with one over the other, its just that when you get to the heavier capacities you only see the slipper style. I would recommend either for you, but more importantly you want to pick the spring set that best matches the capacity of what you plan on towing. In that case I would recommend the 2-Leaf Slipper Spring for 1,000-lb Trailer Axles # SP-177275 since it has the closest capacity at 1,000 lbs per axle. Since your trailer...
    view full answer...
  • How to Determine Load Capacity of Trailer Suspension
    We do not recommend that you exceed your trailer's carrying capacity. You will be limited to your axle's rating. The 3-leaf slipper springs, # SP-039275, that we offer measure 24-1/4" long x 1-3/4" wide. These springs are designed for use on trailers with 1,500-lb axles. If your axles are only rated for 1,500 lbs you would be limited to that. I have included a link to our 2000 lbs axles and a FAQ article on trailer suspension systems for you to check out.
    view full answer...
  • Slipper Spring Recommendation for Trailer that Weighs 2,000 lb
    The most important factor when replacing leaf springs on a trailer is to match the capacity of the springs with the capacity of the trailer axle. So for a slipper spring with a 2,000 lb axle capacity what you'd want is the part # SP-179275. This is considerably shorter than what you mentioned having so you will need to move the hangers of your setup to accommodate this spring as it measure 25-5/8 inches overall and 22-11/16 inches from the bolt center to where it mounts.
    view full answer...
  • Replacing Slipper Springs on Magic Tilt B16W Boat Trailer
    The best way to determine the length of the slipper spring you will need for your trailer is to measure the spacing, center to center, of the spring hangers. If this spacing is approximatley 23 inches, we have a couple of springs that can work well for you. If your spacing is different, feel free to let me know and I will see if we have a spring that will work for you. If your spring hanger spacing is 23 inches, a great replacement slipper spring is the SP-179275 4-Leaf Slipper Spring,...
    view full answer...
  • Thickness of 4 Leaf Slipper Spring for 2000 lb Axle Part # SP01-160
    The 4-Leaf Slipper Spring for 2,000-lb Trailer Axles is 1.04 inches thick at the thickest point. If you need some replacement U-Bolts, we offer them. The part # is SP01-160.
    view full answer...
  • Slipper Spring Replacement Solution for Boat Trailer with 20 inch Springs
    The only solution you have would be to move the hangers of your suspension to allow longer springs to fit since we do not have 20 inch long slipper springs. This will require a welder. If the trailer calls for a 2,000 lb axle rated spring the part # SP-179275 would work well. Or if you have a 1,000 lb axle the part # SP-177275 would be what you need.
    view full answer...
  • Information Needed to Add Electric Brakes to Car Hauler
    Generally speaking, a tandem axle car hauler would be much more stable than a single axle. You'll want a hauler that has a weight rating greater than the heaviest vehicle you're expecting to haul. You can install brakes on most trailers if your existing axles have the brake mounting flange. To specify parts for you, I'd need to know the capacity of the axles, the bolt pattern of the wheels you're wanting to use and the reference numbers from your inner and outer wheel bearings. I'll...
    view full answer...
  • Is the Leaf Spring part # SP-179275 Sold Individually
    The Leaf Spring part # SP-179275 that you referenced is sold individually. If you needed a pair for your trailer you would need to order a quantity of 2. I attached an install video for this spring for you to check out as well.
    view full answer...
  • Correct Slipper Spring for my 16 ft. Aluminum Jon Boat Trailer
    Yes as long as the dimensions are the same you will have no issues with using the 4-Leaf Slipper Spring w/ Radius End part # SP-179275. Most bare 16 ft jons come in under 500 lbs. so the capacity will be perfect for you even if you load it down with gear. I have attached the installation video I made on the springs for you to check out.
    view full answer...
  • Replacement Slipper Springs for 1985 Harding Boat Trailer
    I do have options for you but exact replacements for old boat trailers are hard to come by. In the majority of cases, items will need to be altered for an exact fit which I assume is what is going to need to be done on your trailer as well. We don't have a slipper spring that is 1-3/4" wide x 28" long (center of eye to end of spring) with a 2,500, 3,000, or 3,500 lb capacity. However, leaf springs will fatten out over time which means the leaf spring that was originally installed on the...
    view full answer...
  • Will Slipper Springs be Installed Above or Below New Dexter Axle
    If you are installing the Dexter Idler Trailer Axle w/ Hubs # 20545I-EZ-60-10 with the U-Bolt Kit # APUBR-10 on your Harbor Freight trailer you will install the slipper springs, either # SP-039275 or # SP-179275, below the axle like in the linked installation video. This axle will work as a replacement, though I do recommend verifying your current axle has the same 48" spring-center-to-spring-center length and 60" hub-face-to-hub-face length.
    view full answer...
  • Availability of Slipper Spring for Boat Trailer that is 24 inches Long
    What you have is a slipper spring. This is a common style of trailer spring which we have a few options that are near your 24 inch dimension. We have the part # SP-179275 which is for a 2,000 lb axle, # SP-178275 which is for a 1,500 lb axle, and # SP-177275 which is for a 1,000 lb axle.
    view full answer...
  • Recommended Replacement Slipper Spring Leaf Springs
    Thanks for the photo. Your leaf springs have definitely seen better days and it is time to replace a little while ago. Since you said one side is open and one closed, I assume you have slipper springs. The measurement on the springs is from the center of the eye to the end of the spring in the description. For the measurement you gave from bolt center to bolt center, we have two options: 3-Leaf Slipper Spring w/ Radius End for 1,500-lb Trailer Axles - 24-5/8" Long # SP-178275, and...
    view full answer...
  • Replacement Slipper Spring For Trailer Suspension that is 25 inches Long
    Since you said it was a hook leaf spring it sounds like you have a slipper spring on your trailer that you are looking to replace. Depending on your axle rating we have a few options. For a 1,000 lb axle part # WIC2, for a 2,000 lb axle part # SP-179275 , or for a 1,500 lb axle part # SP-178275. For a 4,000 lb axle part # 803T3.
    view full answer...
  • Picking Out Replacement Leaf Springs for 2001 Coleman Utah Pop Up
    Looks like you have slipper springs on your 2001 Coleman Utah pop up. We have replacement slipper springs available like the # SP-038275 which is 30 inches long and for 1,800 lb axles or the # SP-179275 which is 24-5/8 inches long and for 2,000 lb axles. These are both 1-3/4 inches wide which is the most common width for lighter duty applications like yours. If you can get me the axle capacity you need, the length of the springs, and the width I can see if we'd have a direct replacement...
    view full answer...
  • What is the Difference Between Double Eye Leaf Springs and Slipper Leaf Springs
    The difference is found in the application. The Slipper Spring styles, like part # SP-179275, are intended for use with more heavy duty applications, while the Double Eye styles, like part # SP-124275 are used to provide a more comfortable ride. The part # SP-124275 that you referenced will be the correct fit if your current leaf springs are 26 inches long from the center of the attachments points (usually known as eye-center-to-eye-center). You might also still be needing a U-Bolt...
    view full answer...
  • Are there Bolt-On Hangers for Trailer Leaf Spring Suspension
    We do have a couple of bolt-on spring hangers # CE14017G and # CE14016G but they are designed for slipper springs and not double-eye springs like # SP-124275. Its not likely that professional welder would charge that much. You might be able to find one locally via an iron workers union near you. For u-bolts for your 1-1/2 inch square axle you can use # SP01-120 for 2 u-bolts and 4 nuts. For a u-bolt plate you can use # 115983. For a hanger kit you could use # APS1. Now what you could...
    view full answer...
  • Leaf Spring Recommendation for Trailer with Slippers Springs that are 24-7/8 inches
    When picking out leaf springs there are two important things needed. You first need to get a spring that is rated for the weight of your trailer and then get one that is the proper length. Since you sent us a drawing that shows your slipper springs being 24-7/8 inches in length what you would need to do is determine what axle capacity you need. For a 2k axle you would need is the part # SP-179275 or for 1k axle part # SP-177275. Or for 1,500 lb axle you would need part # SP-178275.
    view full answer...
  • Replacement Leaf Springs for a 1,500 Pound Boat Trailer
    The GVWR is the gross vehicle weight rating which is the most that the trailer can weight when loaded and ready to tow. Since that figure is 1,560 pounds it is likely that the axle on the trailer is a 2,000 pound axle. That would mean you need to look at leaf springs rated for 1,000 pounds each. There are 2 types of trailer leaf springs that we carry: double-eye and slipper. Double-eye springs have an eyelet on each end whereas slipper springs have one just on one end and sort of a hook...
    view full answer...
  • Recommended Axle and Leaf Springs for a Harbor Freight 4x8 Foot Folding Trailer Model 90154
    I recommend # 20545I-EZ-60-10 Dexter Idler Trailer Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs. I like this axle because of the EZ-Lube simple lubrication. You will also want to pick up a U-Bolt Kit # APUBR-10 for mounting your axle. Please check out the attached installation video for additional info. I was able to track down the specs for your trailer on-line and found that it uses slipper springs, so you'll want to go with one of the following. Choose...
    view full answer...




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Info for this part was:

Installed by:
Jeff D
Installed by:
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Expert Research:
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Expert Research:
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Video by:
Kathleen M
Video Edited:
Dustin K
Written by:
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