1. Trailer Leaf Spring Suspension
  2. Universal Group
  3. Leaf Springs
  4. Springs
  5. Double Eye Springs
  6. 25-1/8 Inch Long
4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long

4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long

Item # SP-212275
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Trailer Leaf Spring Suspension
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Trailer Leaf Spring Suspension SP-212275 - Double Eye Springs - Universal Group
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Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 3,500-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. 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long part number SP-212275 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (499)
  • Q & A (347)
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Universal Group Trailer Leaf Spring Suspension - SP-212275

  • Leaf Springs
  • Springs
  • Double Eye Springs
  • 25-1/8 Inch Long
  • 3500 lbs
  • Universal Group

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 3,500-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings 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 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


Specs:

  • Quantity: 1 leaf spring
  • Spring capacity: 1,750 lbs
  • Axle capacity: 3,500 lbs
  • Length from center of spring eye to center of spring eye: 25-1/8"
  • Spring width: 1-3/4"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 11/16"
  • Leaf thickness: 5/16"
  • Number of leaves: 4
  • Additional dimensions: see table


Double-Eye Spring

Part NumberABCD
SP-21227512-9/16"13-3/16"25-1/8"3-1/4"


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.


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-212 Universal Group Double Eye Trailer Leaf Spring - 4 Leaf - 1,750-lb Capacity

Replaces PR4B






Customer Reviews

4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/8" Long - SP-212275

Average Customer Rating:  4.9 out of 5 stars   (499 Customer Reviews)

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 3,500-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.

- SP-212275
by:

First I want to thank you for NOT sending out a review question 2 days after shipping the product ! Everything for my new springs came in a timely manner and were as advertised. I did have to call because the springs I ordered were too stiff. No problem I returned them and got the ones i should have ordered. Trailer rides much better than when it was new.



- SP-212275
by:

Installed easily on my trailer. My trailer sits level again and I expect a much smoother ride next time I haul cabinets on it. One of the old leaf springs broke. I replaced both. Originally I ordered the wrong size but Alexis in customer service was extremely helpful in getting the correct size reordered and helping me return the wrong size ones.


Comments
Its been a year and the leaf spring is still working great! Ride is smooth and level!
James - 07/28/2021


- SP-212275
by:

I installed these on an 8yr old landscape traile as preventative maintenance. Itngetsvused often, and loads get leftnin the trailer for long periods of time. . Dimensions and ratings were exactly what the original mfg of the trailer recommended. Unfortunately, these springs are much softer. I used to be able a cubic yard of rock with this trailer. Now I risk the tires rubbing on the fenders once I load about 1,500lbs into the trailer. (Trailer is all aluminum, 3,500lb rating, 680lb empty). Will be removing these springs and buying better 3,500lb springs. That's what I get for trying to save a buck.



- SP-212275
by:

After discovering a flat spring on my travel trailer, 2000 miles away from home. I called etrailer and consulted with Cailee (customer service) to ensure I selected the correct size spring, she was awesome! She was very knowledgable of the product, handled my complete order, ensured it shipped the same day so I could get it installed and not delay my trip. The spring actually arrived a day early! Install went great, was easy and fitment was perfect! Thank you to Cailee for all the help!!!! I will shop etrailer again in the future, they've truly earned my business!



- SP-212275
by:

Looks like HD Quality. Easy install and perfect fit. I replaced all four on my tandem and it took about 30 minutes per side to install. Now getting the 25 year old original parts off the trailer frame and axles is a chapter in its self. I ordered the Never Fail bushings and hardware kit, u-bolt kit, along with new equalizers to go with the new springs. Good thing too because every thing was worn badly. The new parts gave me at least 2 more inches of space between the frame and the axles. The true test will be when I load it up with logs and hit the road. I added some pics to give you an idea of what I had before and 1 after.



- SP-212275
by:

Positive Experience I recommend etrailer. the price was better than I'd seen locally or online, although it happens that the size and type I needed was a particularly good deal. The service and shipping were surprisingly prompt, and when the box arrived, everything was as advertised. While replacing four leaf springs is about as much fun as shopping for socks, etrailer at least made ordering a positive experience. I actually found the video helpful as well. I've included a picture of what mine actually looked like. A breaker bar is a very handy tool.


Comments
I have a question, Ive. Measured my springs to be 26. 14 to the center of each bolt, however the springs are nearly gone so can I safely say that my springs measurement should be 25 1/4?
-- comment by: DAVID D - 08/23/2013

If there very old and have spent some time overloaded, they certainly could flatten and end up an inch longer than original. It may be helpful to take some of the other measurements on the the spring, and check the information on the axle to find its weight rating. That will make it significantly easier to find appropriate springs.

-- Etrailer Expert Patrick B - 8/24/2013


- SP-212275
by:

The four springs fit my RV trailer exactly like the original parts. I removed the non-greaseable plastic bushings and installed greaseable bronze bushings. The original springs had the bushing holes and bushings pounded out in less than 2,000 miles. The greaseable bushing kit is made by Morryde and cost a little under $100. Hopefully, replacing the plastic bushings will stop the wear. ( 3,500 pound axles, tandem axle RV trailer)


Comments
The springs are still working great.
Ken W - 06/19/2020


- SP-212275
by:

I make my living with my 2008 cargo trailer. On the way to a job, my leaf springs broke on one side and as I nursed the trailer back home afterwards, the other side broke. I ordered all the parts needed from etrailer using their measuring guidelines to get the correct leaf springs and hardware. Having never replaced leaf springs before made me nervous but given the fact that etrailer's website is very comprehensive, I found the correct parts that I needed easily. My parts were delivered quickly and I had the old broken springs off and the new ones installed and was back on the road with only a couple days of down time. I'm very happy with etrailer and will recommended them again and again.



- SP-212275
by:

Not much to say about this. I broke a spring while traveling through heavy road construction on I-80 in Northern Nevada. I ordered a new spring from etrailer on the Internet. It arrived in two days and I discovered I had ordered the wrong size when I tried to install it. I immediately contacted etrailer and they sent a new spring immediately. It arrived in three days later. It was an exact replacement and bolted right in and I was back on the road. What else can I say? Great product and great service!



- SP-212275
by:

Both springs on my trailer were broken, could not believe it. Ordered a set from etrailer 3500 # and they arrived very quick. The springs are heavy duty and were a breeze to install


Comments
Leaf springs were a perfect fit and arrived quickly at a good price
Patrick - 10/08/2020


- SP-212275
by:

I need new springs for a cargo trailer i am converting to a portable observatory for my telescope. and they had the part and it came in the mail in good time. the springs fit perfectly. only regret is I need more trailer parts to complete the project and I could have saved on shipping had I ordered it all at once. Thank you for helping get the order quicker without extra coast.



- SP-212275
by:

I found etrailer online when I searched for leaf springs for my landscape trailer. I am very pleased at the fast delivery and wide range of good quality trailer products and the helpful knowledge etrailer has on it's website. I replaced my leaf springs on my trailer. The new springs I ordered was a perfect fit.



- SP-212275
by:

This spring was an exact replacement for the one on my trailer with a cracked leaf. It went on easily/quickly because of that.



- SP-212275
by:

Product is a perfect fit. It was easy to install. Alot easier to install than the old broken one was to remove. I'm VERY happy and will use etrailer for anything else I may need.



- SP-212275
by:

Have owned this for about a year now. I do lawn care and landscaping, so this trailer is used daily. so far everything has held up, thanks!



- SP-212275
by:

The tire blew out on my camper. I changed the tire. I didn’t realize the spring was broke. I ordered springs and shakels and new bolts. It took just over and hour for both sides. Everything I received from etrailer was just as it should be. Keep up the good job everyone. Thank you



- SP-212275
by:

I am completely satisfied with service and the product that I purchased from etrailer.com. The measurements and specifications on the web site were complete and accurate. Shipping was prompt and the parts were packed more carefully than anything that I have purchased online. Installation of my replacement leaf springs went seamlessly which I really appreciated as I had to leave my broken trailer at my hunt camp and had limited tools to do the repair. I can't recommend etrailer.com highly enough. They are now my first choice in trailer parts.



- SP-212275
by:

I bought springs, shackle bolts, and u-bolts and plates. Everything was great and fit perfectly. Only issue were the u bolts which were not galvanized. However, at a local trailer store, I bought galvanized U bolts for $4.50 each. For the DYIers, taking the old ones off took more than 4 hours for each side. My existing shackle bolts were so heavily rusted that I had to cut three off with a hack saw. Difficulty was confined space to operate hack saw with boat still on trailer. However, reassembling the new springs was less than 45 minutes each side. Must have tools are large diameter 3/4-13/16-7/8 deep sockets (6 point), 2 2 foot long breaker bars and a can of PB blaster. For safety: Good quality jack stands, minimum of 3--don't rely on the front trailer jack as it may roll. By the way, I did these myself and I am 64 years old.



- SP-212275
by:

Enjoyed everything about the experience. The product was what I thought was a really good price. The shipping cost was fair and shipped quickly and even increased but decreasing shipping time for no extra charge. Product was ready and easy to install



- SP-212275
by:

I purchased a set of these leafs for a utility trailer and they worked perfectly.



- SP-212275
by:

Bought a set to replace sagging springs on a 30 year old trailer, direct replacement.



- SP-212275
by:

The springs fit perfectly. And weren't too bad to install. One thing to watch out for is that you do not pinch your brake wires beneath the u-bolt. Customer support was excellent with frequent updates and help handling a backordered part. Delivery was fast, I am very pleased.



- SP-212275
by:

Perfect fit for my trailer. Seem to be well built. Though they are stamped China. But what you gonna do right. If you need them, you need them. Been on the trailer for a couple months now. And seem to be holding up to the abuse.



- SP-212275
by:

Great product , fast shipping.



- SP-212275
by:

These guys made ordering easy! No long drawn out questions. Shipping was fast and right. If I ever need anything of this nature again I will definitely use them again.


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Ask the Experts about this Universal Group Trailer Leaf Spring Suspension

  • Replacement 3,500 lb Leaf Springs Needed Measuring 26" Eye-to-Eye
    We have 2 different options that will work best for your setup; part # SP-212275 (25-1/8" long rated for 3,500 lb axles) and part # SP-051275 (26" long rated for 4,000 lb axles). Both are 4-leaf springs but the extra leaf really isn't a concern. Basically if you're taking that 26" center-eye-to-center-eye measurement with the trailer loaded then it's possible that the 25-1/8" long option is correct because leaf springs will spread out further when under load and they can extend a little...
    view full answer...
  • Recommended Trailer Suspension to Dampen Road Shock
    Based on what you are saying and your photos, it apprears you have springs that are double eye springs. The springs will need to be based on the load of your trailer. The axle capacity may be difficult to know as you said it appears to be custom. I recommend determining the full capacity of the trailer including the wood you will be adding to it. Once you know that complete weight, then I can help you determine the best springs for your total capacity. Overbuilt isn't bad in...
    view full answer...
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  • Will a 4000-LB Leaf Spring Fit on a 3500-LB Axle
    Yes the 4,000-lb leaf spring is compatible with a 3,500-lb axle. There are a couple of important measurements. Spacing from eye to eye on the spring when unloaded with no weight on the axle. Inner eye diameter of the spring roll Spring width from outer edge to outer edge Based on your measurements I recommend the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long Item # SP-220275 and Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye...
    view full answer...
  • Replacement Leaf Spring Assembly for a Single Axle Cargo Trailer
    Thank you for the photos! They really helped. For your double eye leaf springs, the 4-leaf 25-1/8" Long, part # SP-212275, that you referenced are in fact the right ones for you. The reason they are slightly shorter than your current ones is because they tend to stretch a little over time. I've linked to a video installation of this spring for you to reference. Also, remember that you will need two. From your photo, it looks like you might have trouble with the existing hardware when...
    view full answer...
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  • Alternative to Leaf Spring Spacers to Lift Trailer
    Although we do not have spacer blocks of that dimension we have an option for you that will allow you to lift your trailer with what is called an over/under conversion kit. This moves your trailer's leaf springs to the top of your axle and lifts your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack (please keep in mind this conversion kit is for use with double-eye springs only). The accompanying photo a customer sent in shows the...
    view full answer...
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  • How to Raise the Height of a 5th Wheel Trailer Without Flipping the Axles
    To gain height without flipping your axles I recommend doing 2 things: replacing your leaf springs with ones that have more leafs and changing out your hangers for taller ones. You can probably get away with just swapping out your hangers but unless you only have something like 2 or 3 leaf springs and you want to gain height you would have to go with at least 4 or 5 leafs to gain enough height. When replacing leaf springs be sure to choose new ones that have a weight rating that matches...
    view full answer...
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  • Replacement Double Eye 4 Leaf Spring For Single Axle Trailer
    I have two sets of springs that are a 4 leaf spring that'll work for you. They are for two different weighted axles, a 3,500 lb axle # SP-212275 and a 6,000 lb axle # SP-221275. Both measure 25-1/8 inches long which is a bit shorter, but this is the measurement without any weight on the springs. I've included a diagram with more measurements so you can double check! These both do not come with the mounting hardware. You could use the same hardware or you can use one of these # 7162184UB. I've...
    view full answer...
  • Installing Leaf Springs on Single Axle Trailer
    For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind and have issue as you go over bumps. If it is completely vertical or angled back toward the axle, then your leaf spring is not long enough and your suspension components will not move as intended giving you a rough ride at best and at worst failure...
    view full answer...
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  • Axle Spacing To Use 29-1/2 inch Long Leaf Springs with Slipper Axle Tandem Hanger Kit # AP216-H238
    With 29-1/2 inch leaf springs like the # SP-161275 that you referenced the axle spacing you'll want to use with the hanger kit part # AP216-H238 would be 35-1/8 inches. You cannot use the over under kits we offer with slipper springs.
    view full answer...
  • Recommendation for Replacing Trailer Leaf Springs
    Though the length of the leaf springs is important, the capacity is more so. The Universal Group 4 Leaf # SP-212275 will get you to 25 1/8 inches from eye to eye and a capacity of 3,500 pounds per axle. We do also have a heavier option with the # SP-222275. This will be very close to you measurements at 24 7/8 inches, but is rated to a and axle with the total capacity of 5,300 pounds. If you do need to go with a longer spring due to it matching you weight capacity better, you can...
    view full answer...
  • Can 3,500 lb Leaf Springs be Used on Trailer With 2,700 lb GVWR
    Since you have a 2-3/8 inch diameter axle, your axle is rated for 3,500 lbs, and you can use leaf springs rated for 3,500 lbs even with a trailer that has a 2,700 lb GVWR, though the ride might be a bit rough with heavier-rated springs. The number of leaves isn't as important as the rating, though, as there are 3-leaf and 4-leaf springs for 3,500 lb axles depending on their length. In order to get the right leaf spring, you will need to measure your current springs from center of spring...
    view full answer...
  • How To Determine Where To Position Axles On 24'6" Trailer
    The placement of your axles on your 24'6" trailer will be dependent on the total weight of the trailer plus the tongue weight of your trailer. In general you want 60% of the frame of the trailer to be in front of the center equalizer bracket, but it is really dependent on the total weight of your trailer compared to the tongue weight of your trailer. If your tongue weight is over 15% you will want to move your axle forward until get the tongue weight between 10-15%. I included...
    view full answer...
  • Replacement Leaf Spring for 3500-lbs Axle on 2017 Starcraft Satellite 17RB
    Under normal loads, a spring like the # SP-212275 is going to stretch out a bit and become longer than they would when in good working condition. You should be careful not to exceed the GVWR of your trailer. I'll also add that when springs are stretched out like this, the measurement you're going to get is going to be about 1/2" longer than the springs that you'll need to replace them; the biggest factor you'll want to consider is the axle capacity, when choosing replacement springs. There...
    view full answer...
  • Replacement Straight Equalizer for Existing 6-1/2 Inch Long Straight Equalizer
    To replace your existing 6-1/2 inch long straight equalizer you can use the 5-1/2 Inch Long Straight Equalizer for 1-3/4 Inch Double-Eye Springs # TREQR2 with longer shackle straps on your trailer. If you replace your 6-1/2 inch equalizer on one side, you will want to use the same set-up on the other side of the trailer as well. The # TREQR2 equalizer measures 5-1/2 inches from the center of one bolt hole to the center of the bolt hole on the other end. The equalizer is 1-1/2 inches...
    view full answer...
  • Replacement Leaf Springs For 2017 Keystone Bullet Premier Travel Trailer
    Since you mentioned that you broke a leaf spring and not the axle, in order to determine which replacement leaf springs you'll need for your 2017 Keystone Bullet Premier Ultra Lite Travel Trailer you will need to measure your current springs from the centers of one spring eye to the other. This distance is going to determine which springs will fit as a replacement. Since we know you have a 3500-lb axle, we can narrow it down a bit. If your old springs measure roughly 23-1/8" long from...
    view full answer...
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  • Help Picking Out Replacement Trailer Leaf Spring for Spring that Measures 26 inches Long With Load
    I need two things to help you pick out the correct leaf springs for your trailer. I need to know the axle capacity of your trailer as well as the length from eye to eye without a load on your trailer. With those two pieces of info I can help you pick out the correct springs. A likely candidate for what you need is the part # SP-212275 which is for the very popular axle capacity of 3,500 lb and is 25-1/8 inches long. This would be about the right length when your spring doesn't have a...
    view full answer...
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  • Can 4-Leaf Springs be Replaced with 5-Leaf Springs on 2016 Grand Design RV?
    We can certainly help you replace your leaf springs, but your 2016 Grand Design Reflection 29RS, has Lippert 3,500 LB tandem axles, and unfortunately there are no 5-leaf springs available which meet that capacity. To find proper replacements, you will need to know the length of the springs from the center of one eye to the center of the other eye. If that measurement is 25-1/8 inches, you will want the 4-Leaf Double-Eye, # SP-212275. If the eye-to-eye measurement is 27 inches, you need...
    view full answer...
  • Replacement Leaf Spring Recommendation for a 2005 Keystone Outback with 3,500 lb Axle
    Most likely yes as the leaf springs part # SP-212275 are 3,500 lb rated like what your 2005 Keystone Outback Travel Trailer has axles rated for. The capacity of the spring is the most important factor in picking out the correct spring. Next you want to match the length of the spring to what you currently have. This spring is a 25-1/8 inch long spring. Measure yours without a load on it. If yours is right around 25-1/4 inch (they stretch over time) this spring would be a perfect replacement. Worst...
    view full answer...
  • 2017 Grand Design Momentum 350M Leaf Spring Replacement
    We can definitely help! But I need you to get me the axle capacity on your trailer and the lengths of your current springs (the good ones) so that I can pick you out the best solution. Or you can check out the link I attached to this page that has all of the double eye springs we have and you'll be able to select your axle capacity and length needed from the filters.
    view full answer...
  • How To Replace Worn Out Flat Leaf Springs
    I normal amount of sag in a worn out leaf spring is about 3/4" but it sounds like yours are completely worn out and flat. I recommend to measure from one hanger to the other hanger for the length of your spring. If you let me know that measurement and the axle capacity I can figure out the length of spring you need.
    view full answer...
  • Replacement Leaf Springs and Shock Kit for Trailer with Two 3500 Pound Axles
    Based on the measurements and description you have provided you will need leaf spring # SP-212275. This spring measures 25-1/8 inches long from the center of one eye to the center of the other eye. None of the other double-eye springs for 3500 pound axles have close enough measurements even if the weight had been off of the springs when you measured. I have included a link to a video showing an example installation of this spring for you. For shocks you can use set # LC281255 (one set...
    view full answer...
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  • How to Measure to Select Correct Replacement Leaf Springs for Utility Trailer
    The best way to measure your springs is to remove one from the suspension so it is no longer under tension. This way you can accurately measure its eye-to-eye length. If your hangers are 25-1/4-inches apart chances are that your spring would be 23-1/8-inches, such as # SP-216275 which is indeed rated for 3500-lb axles. Keep in mind that swapping out trailer leaf springs or the axle may not actually increase the capacity of your trailer. This would be the case only if you knew for certain...
    view full answer...
  • Correct Hanger Spacing Using Triple-Axle Hanger Kit With 3,500 Lb 25-1/8 Inch Long Leaf Springs
    The correct hanger spacer when using the Triple-Axle Trailer Hanger Kit part # APTT5 with the 4-Leaf Double-Eye Spring part # SP-212275 is 29-1/2" from the front hanger to the center hanger, 34" between the center hangers, and 29-1/2" from the second center hanger to the rear hanger. Please note, you will also need the U-Bolt Kit for Mounting Kit part # APUBR-1 in order to mount the leaf springs to the axle.
    view full answer...
  • How To Correctly Measure Double Eye Trailer Leaf Springs for Replacement
    In order to measure a double eye leaf spring you'll need to do so while unloaded and from the center of one eye to the center of the other. I have attached a photo below to assist. Please note, old worn out springs will measure out a bit longer than their replacement. I have attached a full list of our options below. The other thing you'll need to know is the axle capacity. The 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles part # SP-212275 is out most common replacement measuring...
    view full answer...
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  • Replacement Equalizers and Leaf Springs for Tandem Axle with 3,500 lb Axles
    Sounds like it's a good time to replace all of the leaf springs and equalizers. So for springs the part # SP-212275 would be a great option as this is a tiny bit shorter than your current springs (they stretch slightly over time), and they are rated for 3,500 lb axles. Then for an equalizer kit the part # AP233 would replace all of your bolts, equalizers, shackles, and nuts.
    view full answer...
  • Correct Replacement 25-1/8" Long Leaf Spring for 3,500 Lb Axle
    Yes, we have just what you need in the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles part # SP-212275 which will be an exact fit replacement.
    view full answer...
  • Rebuilding a Trailer and Fixing Suspension Issues
    The spring hangers should be square and you shouldn't have a gap as there is a bushing that should be in the eye of the spring to make up that difference. You may want to consider the Single-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front, 1-1/4" Rear # APS2. This will give you the ability to realign your hangers and place them in the correct spots for your axle placement. I've attached an article to assist.
    view full answer...
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