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3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long

3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long

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Trailer Leaf Spring Suspension
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Universal Group Trailer Leaf Spring Suspension - SP-220275
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Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 4,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter. Lowest Prices for the best trailer leaf spring suspension from Universal Group. 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long part number SP-220275 can be ordered online at or call 1-800-940-8924 for expert service.
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Universal Group Trailer Leaf Spring Suspension

  • Leaf Springs
  • Springs
  • Double Eye Springs
  • 25-1/4 Inch Long
  • 4000 lbs
  • Universal Group

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 4,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.


  • 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 bushings included
  • Pre-mounted hangers or aftermarket hanger kit (sold separately) required for installation
    • Spring attaches to hanger mounted on trailer frame at one end
    • Other end connects to shackle straps suspended from hanger or equalizer


  • Quantity: 1 leaf spring
  • Spring capacity: 2,000 lbs
  • Axle capacity: 4,000 lbs
  • Length from center of spring eye to center of spring eye: 25-1/4"
  • Spring width: 1-3/4"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 11/16"
  • Leaf thickness: 3/8"
  • Number of leaves: 3
  • Additional dimensions: see table

Double-Eye Spring

Part NumberABCD

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.

Double-eye leaf springs attach to hangers that are welded onto your trailer. One end of this spring will attach directly to the hanger with a suspension bolt. The other end will attach to shackle straps that are suspended from a hanger. These straps allow the spring to move and pivot so that it can better compensate for uneven pavement. If you have a tandem- or triple-axle trailer, the shackle straps will be attached to the equalizer that connects multiple springs.

To mount this spring, you will need hangers, shackle straps, and suspension bolts. If you are simply replacing a spring, you may still have hangers welded onto your trailer. You should, however, replace your shackle straps because they are usually the first component to wear out. You may choose to replace old suspension bolts as well. It is 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-220 Universal Group Double Eye Trailer Leaf Spring - 3 Leaf - 2,000-lb Capacity

Replaces PR3

Item # SP-220275

Customer Reviews

3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long - SP-220275

Average Customer Rating:  4.9 out of 5 stars   (192 Customer Reviews)

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 4,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.


I ordered the Dexter Heavy Duty Suspension Upgrade Kit and a set of leaf springs for my travel trailer, and they arrived in 1 box in 5 days (counting the weekend days) from Missouri to Maine. Very impressive especially for free shipping (over the $xx minimum). They were an exact match for the originals and fit perfectly.


Parts went on without any issues...
replaced broken 4000lb. Springs, bolts, and new fenders.
Redoing a trailer that had seen better days...
Thanks to George and his team at trailer...

Still going strong!!! I dont really beat on my stuff. I was given a trailer that had seen better days, I rebuilt most of the mechanicals on it & its still serving me well…Thanks for the follow up though…
William D - 01/21/2019


Perfect fit. My old springs were rusted at the eye and broke, which is why I needed to replace. Due to trailer overload. These springs are performing well in the last year. Great quality!


I ordered the springs a couple days after I ordered the Morryde CRE 3000. The Springs got here a couple days before the Morryde. Very fast shipping.
I have yet to pull the trailer, but I feel like this upgrade will save me down the road..


Good quality and value for the price. 1 year later, showing minor rust on the leaf ends and at the bands. A coat of paint before installation might be a good idea if you're worried.

I would use a thin coat of lithium grease to prevent rust on a product like this. Here are more tips attached in this help article:
-- Etrailer Expert Sierra K - 12/30/2021


an inexpensive way to beef up your suspension. best to get at least 2 of these before you really need them, easily stored somewhere either in tow vehicle or trailer storage. had one break on my trailer and it cost me $200 to have one fabricated and installed which is more than 6 times the price of one here.


I called customer service and worked with William B. He was patient and listened while i described problem and sent pictures to him for review and advice. He took time to search forums and find out specifications of the boat trailer which happened to be quite old. Helped solve a challenging problem and called me back quickly when had some questions about my order. he also sent me an email about the status of the order and let me know when it shipped. I was very impressed with the customer service. I ordered several size options and etrailer was great to work with. The trailer was for a boat MasterCraft Prostar 205 from '90s and wasn't able to measure the springs correctly because it was 3 hours drive away. Thanks for great service.


I'm So glad I found ! When the leaf spring broke on my lawn service trailer , I didn't know where to turn. Was very helpful and the Price was Great! I ordered them and They arrived Monday! I was very Impressed, what with it being the Holidays and all. My Husband was able to change them out and now greenie and I are back to work. Thank you for your Great service!

Patty H - 01/02/2021


Great replacement for worn parts.


Super fast shipping. Perfect replacement, bolted right up. We replaced the 3500 lb. springs with the 4000 lb. springs, works great, raised it up slightly and it's less bouncy.


Fast and the perfect fit for my bass tracker boat trailer.


The springs fit great. The bushings for the MoRyde fit perfectly inside. Great Fit for my 2600RB


Had a broken spring on my 16 year old trailer. Found correct parts to replace all 4 springs and hardware in one place. Everything fit and worked great at reasonable prices.


Can't beat the price!


I bought 4 of these to replace the deformed springs on our 2013 travel trailer that were damaged in a frightening traffic incident in June. I opted for these 2,000 lb. springs versus the 1,750 lb. OEM replacement units since the fit was equivalent and I wanted to ensure sufficient sustained clearance inside the wheel wells. I had no difficulty removing the nylon bushings and installing the bronze ones from the upgraded Dexter suspension kit which I also purchased, and the springs fit perfectly. I'd have given them 5 stars, but they weren't individually boxed so they each suffered some scuffing during shipment which has already resulted in a few premature rust spots appearing.


Should do the trick. My old springs were shot. Look good but haven't installed them yet.


appear to be quality springs - promptly shipped. Went on without a hitch as part of a complete tandem axle trailer overhaul. I had ordered these at the same time that I placed an inquiry about a previous order to another company regarding a brake kit - received these at my door before receiving an email response from the other company!! Later learning, after making a phone call to the other company, that my brake order was not in stock and would be 2-3 weeks for shipping. Decided to cancel other order and buy the brake kit from etrailer - received it within 4 days. Great customer service - will go straight to etrailer for all my replacement parts in the future. Lesson learned!


Perfect fit


I've had the new suspension on my trailer (20' flat bed) for about a year now with no problems, I tow a race car to about 20 to 25 events a year. All the parts fit perfect and are holding up good. Next on the list to do is a complete brake upgrade I will definitely get the parts from 


It's a perfect fit. raised up travel 1" ish. I'd actually forgot that I'd replaced them since they have not given me any reason to think about them since the replacement.


Exactly as expected


Purchased a Leaf Spring - my boat trailer just like new!


Very fast shipping


Good springs at a good price


My boat trailer is 25 years old. I was not really having a problem but decided to replace the leaf springs on the trailer.
My order for replacement parts was sent exceptionally quickly. And I installed them the next day.
All the parts fit perfectly and everything was sized right. I really enjoyed installing the new leaf springs and parts.
The price for the parts seemed very reasonable and the salesman I spoke with seemed very knowledgeable and answered all my questions.

Installed on my boat trailer, working fine.
Ronald T - 03/24/2019

Show More Reviews

Ask the Experts about this Universal Group Trailer Leaf Spring Suspension

  • Availability of Replacement Leaf Spring That is 25-3/4" Long
    We may have the exact leaf springs that you are needing depending on how you measured your current leaf springs. When measuring your leaf springs you will want to measure from the center of one eye to the center of the other eye. The Universal Group 3-Leaf Double-Eye Spring # SP-220275 might be the exact measurement that you took as it is 25-1/4" long from the center of one eye to the center of the other eye. If you measure slightly off this leaf spring could still work as it is not unheard...
    view full answer...
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  • Does Trailer Axle Need to be Moved Forward?
    The correct axle position should be determined by the formula I have added for you. The 60/40 ratio you mentioned is normally just a starting point and you would want to use the formula to figure out the optimal place for your axle. As for measurement, when using this formula you will want to measure from the end of your trailer tongue.
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  • Can Leaf Springs be Replaced with Higher Capacity Springs
    You can replace your current springs with higher capacity springs, like # SP-220275 which are rated for 4,000 pound axles (2,000 pounds per spring), but it isn't going to increase the weight capacity of your trailer. You'll still be limited by the lowest rated component of the entire trailer. You'll want the replacement springs to be the same length as the current ones. measure them from eye to eye. Keep in mind your old springs may be sagging or have elongated.
    view full answer...
  • Double Eye Leaf Springs 25-1/4 Inches long by 1-3/4 Inches Wide
    For your leaf springs on a 2,000 lb axle, you only need 1000 lb springs x 2 as you stated. With the dimensions you gave, we only have 2000 lb capacity springs currently available. They are the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long # SP-220275. As I stated these are twice as strong a spring as you need, so it will give you a more rigid trailer ride but will fit your hangers and your axle. If you choose to use these springs, you will not increase the weight...
    view full answer...
  • Recommended Replacement Leaf Spring For 2004 Weekend Warrior Super Lite FK 2100
    For your 2004 Weekend Warrier Super Lite FK 2100 rated at 7650 lbs GVWR, I have some replacement springs that will work great for you. The are the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long # SP-220275. Even though they are 3 leaf instead of 4 leaf, they have the weight capacity and are almost identical in dimension. The only difference is 3 inches tall instead of 3-1/2. These will be the closest to the original that we have and they will simply bolt into place...
    view full answer...
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  • Replacement Leaf Springs for a Pontoon Boat Trailer with Three 3,500 Pound Axles
    It does sound like those springs are underrated for your 9,000 pound boat/trailer. The 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long Item # SP-220275 will fit since they have the same length as your existing springs and they are not rated too high to be effective so you are good there too. I have linked a video review of these springs for you.
    view full answer...
  • Where is Axle Placement on Trailer Measurement Taken From
    The 60/40 measurement to use when initially placing axles is from the center of where the ball fits into the coupler to the very back of the trailer. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger. For example, if the trailers frames length is 18 feet, then the center-line location for the equalizer hanger will...
    view full answer...
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  • Where to Place Axles on Hay Cart Converted to Tandem Axle Trailer
    To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger. For example, if the trailers frames length is 18 feet, then the center-line location...
    view full answer...
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  • Determining Correct Length Replacement Leaf Spring
    Trailer leaf springs can grow longer after many years of use. A new springs that measures 25-1/4-inches long could easily measure 25-1/2-inches after years in service on a trailer. Springs can lengthen as much as 3/4 of an inch. If your old spring measured 25-1/2 you can safely conclude that it is actually a 25-1/4-inch. Our main leaf spring page is linked for you. Just click on your dimension and axle weight rating to see suitable options. Generally you want no less than 3-inches of...
    view full answer...
  • Recommendation for Higher Capacity Leaf Springs on Camper with 3,500 Pound Axles
    For higher-rated leaf springs that match the length on your existing sets, I recommend taking a look at the 3-Leaf Double-Eye Spring # SP-220275. This double-eye spring features an eye-to-eye length of 25-1/4 inches and a spring width of 1-3/4 inches. It is designed for 4,000 pound axles (2,000 pound capacity per spring). Just keep in mind that upgrading the capacity on the leaf springs will not necessarily increase the trailer's overall capacity. This is because the trailer will still...
    view full answer...
  • Figures Used to Determine Tongue Weight and Trailer Weight for Axle Placement
    If your trailer weighs 16.8k lbs yeah you'd want to get the tongue around 1,700 like you mentioned. At 3,600 lbs tongue weight your axles are too far back and would need to be brought forward to better balance that out. In the picture you mentioned the wheel weight and tongue weight (actual) are weights that are recorded with scales. When you then go to determine the movement needed to obtain the correct placement for ideal tongue weight you use the formula with the total weight of the...
    view full answer...
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  • Replacement Leaf Spring for a 2006 Starcraft Series 2106 Trailer
    I can certainly provide you with everything you need to gather in order to find the correct leaf spring for your 2006 Starcraft Series 2106 but unfortunately, I would not be able to give you an exact part number just yet. The first thing you are going to want to do is measure the length of the leaf spring from the center of each eye hole. Please note that as springs wear down over time they lengthen so the new spring will mostly likely be shorter than the spring it is replacing. The next...
    view full answer...
  • Where to Locate Axles on a Triple Axle Trailer
    Determining the location of the axles on your triple axle trailer can be difficult, but basically you want to locate the axles so that the tongue weight of the trailer is 10 percent of the total trailer. Typically on triple axle trailers the center axle will be located 60 percent of the way from the front of the trailer and 40 percent from the back. This isn't always the case as boat trailer and some flat bed trailers have the axles more to the back of the trailer. For example, if the...
    view full answer...
  • Can I Use Higher Rated Leaf Springs On Grand Design Trailer
    Thank you for all of the very helpful information Kevin. Let me start by saying the amount of leafs isn't as important as the capacity the actual spring is rated for. We have single leaf springs that are rated higher than some 4 leaf springs so it is not an accurate measurement to go by. So what really matters is the length measurement of your existing springs center of eye to center of eye and the capacity of the spring. With that said, you may use a higher rated spring like the
    view full answer...
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  • Moving Axles on Travel Trailer to Accomplish Correct Tongue Weight
    There are too many variables concerning the design and construction of the travel trailer to determine. I can imagine that the wheel wells and consequently the inside cabinets would have to be moved among other things. From your scale receipt it looks like you unhitched your trailer and took the truck off the scale. From this measurement the trailer gross weight was 8700 pounds, a result of 7460 pounds on the trailer axels and 1240 pounds on the tongue. This puts 14% of the weight on...
    view full answer...
  • Replacement Slipper Spring for 24-1/4" From Center Eye to Front of Rear Hanger
    Thank you for the pictures and the explanation! The leaf spring that fits the spacing you have is the 5-Leaf Slipper Spring w/ Hook End for 6,000-lb Trailer Axles # SP-160275. If you check out the attached photo the "B" dimension is 24-1/4" which is measured from the center of the bolt hole eye to the front of the rear hanger. Since it looks like your rear hanger is about 1-1/2" long this puts you about at the 24-1/4" mark and means this slipper spring will fit!
    view full answer...
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  • Where to Place Axles on Tandem Axle Trailer
    The ideal axle location(s) is a location that allows the trailer tongue weight to end up being 10 to 15 percent of the total trailer weight. Normally a great place to start is by having the center between the two axles 60 percent back from the coupler of it. This leaves 40 percent behind the axle centers which is normally what gets the correct tongue weight. Sometimes this doesn't always work but I attached a help article and picture to this page that covers more of the process. 60 percent...
    view full answer...
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  • Can Slipper Springs Be Used for Tandem 5,200 Pound Axles
    As long as both the axles and slipper springs are appropriately rated for the planned loaded weight of your trailer, there's no problem with using slipper springs instead of double-eye models. Slipper springs are actually typically used for more heavy-duty applications, so they're going to work really nicely on a heavier trailer like what you are building. I have attached a couple of great articles on trailer suspension below that you might also check out. Just let me know if there are...
    view full answer...
  • What Does Weight Capacity Of Trailer Leaf Spring Mean?
    The spring capacity is the weight the spring is designed to support. For example the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long # SP-220275 you were looking at is designed for 4000lb axles, meaning each spring can support 2000lbs. When the leaf spring is loaded to 2000lbs it will not totally flatten, and should only deflect about 1-1/2". To make sure that the spring is correct for your axle you will need to fit the axle rating, and the length of of the leaf spring...
    view full answer...
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  • Can 26 Inch Trailer Leaf Spring Be Replaced With 25-3/4 Inch Spring
    How did you measure the existing springs? Because leaf springs will flatten out over time as they wear, the best way to get an accurate measurement of the eye-to-eye length is with the trailer up on jack stands so the axle hangs free. This should provide the 'true' length of the springs. As far as replacing the 4 stack with a 5 stack goes, the number of leaves doesn't necessarily equate to an identical capacity, so in addition to the correct length you'll want to ensure your replacement...
    view full answer...
  • Typical Capacity of 3 inch Diameter Trailer Axle
    A 3 inch diameter round trailer axle normally has a 6,000 lb capacity. That would also match up to the other info you listed as well.
    view full answer...
  • Is the Suspensino on My Tandem 3,500 lb Axle Trailer Messed Up
    The good news is that your trailer suspension may not be as messed up as you are thinking. The 8" equalizer you are referring to was actually just specific to that customer's question and it isn't a rule for every trailer. The only real way to know that the suspension placement on your trailer is messed up is if you don't achieve the 10% tongue weight (TW) with your trailer unloaded. This typically requires the equalizer to be place in a 60/40 distance on your trailer where 60% is in front...
    view full answer...
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  • Determining Placement of Axle on Tandem Axle 14 Foot Trailer
    There is a way for you to find out exactly where to place the center hanger of your 14 foot tandem axle trailer. If you take a look at the diagram I added, which is part of a help article I linked on how to determine where to put your trailer's suspension components, you can see that there is not a set distance, such as the 8.4 feet you asked about, to place the center hanger for the equalizer. Instead you will need to use the formulas you see in the diagram to ensure the axle placement...
    view full answer...
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  • Replacement Leaf Springs for a 2008 Crossroads RV Zinger Series M-26 BH
    It sounds like the leaf springs you have now are far too understated for the weight of your 2008 Crossroads RV Zinger Series M-26 BH. The pair of leaf springs will need to be rated for at least the weight capacity of the axle. For example, if you have a 3,500 lb axle then each leaf spring would need to be rated for a minimum of 1,750 lbs or 3,500 lbs for the pair. You can certainly add a higher rated leaf spring but exceeding the axle capacity by too much is going to create a stiff ride. If...
    view full answer...

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