4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long

4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long

Item # SP-221275

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Trailer Leaf Spring Suspension

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Universal Group Trailer Leaf Spring Suspension - SP-221275
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  • Springs
  • Leaf Springs
  • Double Eye Springs
  • 25-1/8 Inch Long
  • 6000 lbs
  • Universal Group
Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 6,000-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. 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long part number SP-221275 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (23)
  • Q & A (22)
  • Videos (1)
  • Photos
  • Why etrailer?

Universal Group Trailer Leaf Spring Suspension - SP-221275

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 6,000-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: 3,000 lbs
  • Axle capacity: 6,000 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: 3/8"
  • Number of leaves: 4
  • Additional dimensions: see table


Double-Eye Spring

Part NumberABCD
SP-22127512-9/16"13-5/16"25-1/8"3-1/8"


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.


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-221 Universal Group Double Eye Trailer Leaf Spring - 4 Leaf - 3,000-lb Capacity







Video of 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" 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-221275 Review

Today we're going to be taking a look at the 4 leaf double-eye spring for 6,000 pound trailer axles. This is made from a durable steel construction. It's designed to flex to absorb road shock and provide a smooth ride. It's going to reduce wear and tear on your trailer, and it's going to ensure a level ride on bumpy and uneven surfaces. Now, this is designed to mount to the trailer frame with hangers or a hanger kit. Those items are sold separately. If you're in need of something like that, you can check out your options here at etrailer.com.

You'll notice that right here on each eye that it does have the nylon bushing. Those are included and they're pre-installed. This is going to contain a total of 4 leafs, so it's a 4 leaf double-eye spring. Its spring capacity is 3,000 pounds, and, again, it is designed for 6,000 pound trailer axles. Few dimensions to go over with you real quick. We want to take a look at the spring length; that's measuring from the center of one eye to the center of the other. That's going to give us a measurement ...

That looks to measure around 25 and 1/8th of an inch to 25 and 1/4, right in that area. The spring width, edge to edge, is 1 and 3/4s of an inch. Then the eye diameter is 9/16ths of an inch. Now, to ensure proper axle alignment and suspension performance, it is recommended that leaf springs should always be replaced in pairs. That's going to do it for today's look at the 4 leaf double-eye spring for 6,000 pound trailer axles.


Customer Reviews

4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long - SP-221275

Average Customer Rating:  4.9 out of 5 stars   (23 Customer Reviews)

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 6,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.

- SP-221275
by:

Very good service and quick turnaround. Prices were great, and large parts inventory. 446088



- SP-221275
by:

Just what it needed for restoration! Works great 590889



- SP-221275
by:

As expected. Etrailer my go to place for trailer needs. Full time Rver using etrailer where ever I’m stopped. Great products, best help and easy to deal with, never disappointed! 562896



- SP-221275
by:

etrailer great prices . order and shipped out quickly. kept my down time short back on the water. 410341


Comments

Super well worth the $$$$

Mike A - 07/25/2018

41463

- SP-221275
by:

We replaced the equalizers and the leaf springs at the same time. The leaf springs from etrailer.com were exactly the same as we could purchase locally and at a significantly reduced cost. Well done etrailer. 501836



- SP-221275
by:

While we haven't travelled with our 5th wheel yet since installation of our new springs and and the Lippert Never Fail Suspension Upgrade Kit, I am very pleased so far. All of the parts arrived in less than 24 hours from the time I placed my order and etrailer representative was very knowledgeable and helpful. Everything looks great. 424243



- SP-221275
by:

Excellent service. Very knowledgeable regarding products 495593



- SP-221275
by:

Super fast shipping 647832



- SP-221275
by:

The leaf springs fit perfectly and got us up and running again. We are repeat buyers because of the great service and products. Plus the very fast shipping. Thanks again for the fast service. 643567



- SP-221275
by:

Really helped the ride and handling. The springs are doing their job and are holding up well. With the addition of new shocks this year, I have to keep reminding myself that I'm towing! 643173



- SP-221275
by:

For china made they will work for now. Etrailer needs to carry American made springs. I will pay a little more to support the American brand. 581931



- SP-221275
by:

Installed on 5th wheel, appears all is well. A trip to Florida upcoming. 571003



- SP-221275
by:

I ordered the new leaf springs on Thursday, and they delivered Monday. You couldn't ask for any better. I installed them the same day they arrived. The fit was perfect! I am very happy with the service and products from etrailer. 511760



- SP-221275
by:

Fit perfect no problems since the insta ll... 484552



- SP-221275
by:

Good product fast shipping good price 464964



- SP-221275
by:

The springs fit perfectly. But what was even better was the customer service and follow up !! Thanks 463213



- SP-221275
by:

Well made and completely accurate speci fication 429436



- SP-221275
by:

Great product at great price. Received shipment very quickly. 415542



- SP-221275
by:

Ordered 4 springs. They were what they were supposed to be. Installed them with no trouble. Arrived much sooner than expected right to my door step. Would recommend this company to everyone. 411722



- SP-221275
by:

These replaced the springs on my 7X14 enclosed cargo trailer. The selection, price, and ease of ordering were awesome. They went on very easily and with the axle flip kit I also bought, I have about 4 inches of extra clearance. No more sagging and dragging. The only bad thing I can say is the springs are made in China. I prefer to buy American whenever I can. 394941



- SP-221275
by:

I ordered springs, bushings , shackles, equalizer, and bolts from e-trailer for my rv tandem axle Chris helped me insure I had the correct parts and the correct quantity of parts. I put one on and everything went fine. The only problem was the galvanized coating on the shackles made the hole to small and had to be drilled. ETrailer has great videos to show you how it is done. The phone sales staff was knowledgeable and effective, and shipment was quick, and all parts were there. 307187



- SP-221275
by:

The product came exactly as described, fast shipping, I was very pleased with service! 294332



- SP-221275
by:

Spring 3000# & 1/2" Ubolt 291070


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Ask the Experts about this Universal Group Trailer Leaf Spring Suspension
Do you have a question about this Trailer Leaf Spring Suspension?


  • Can I Replace 4 Leaf Springs With 5 Leaf Springs For The Axle On My Trailer
  • Yes, you can replace your 4 Leaf Springs like part # SP-221275 with 5 Leaf Springs like part # SP-111275 as long as you replace all of the springs at the same time. There really isn't any advantage if you want to go with 5 leaf springs over 4 leaf springs. Typically, you always want to try to get the same parts to replace what you already have, but 1/8 of an inch difference per leaf spring won't make much of a difference in how everything fits together. The 5 leaf springs will work just...
    view full answer...

  • Changing 3,500 Pound Trailer Axles to 5,200 Pound Axles
  • The first thing to consider is if the axle(s) are actually bent. Trailer axles have a bow in them so they are higher at the center than at the ends. When under load the axles straighten out some. That is part of how they get their capacities. If the axles are bent from damage then that is another story. Like you said the 5,200 pound axles that we have include spring seats that are on the bottoms of the axles. In order to have the spring stacks on top of the axles all you would need...
    view full answer...

  • 6k Trailer Leaf Spring and Hanger Kit Availability for Tandem Axle Trailer
  • We have a few 6k leaf springs that could work for you but we need to know the length of the springs that you need. For a 25-1/4 inch spring we have the part # SP-111275. For a 26 inch long spring we have the part # SP-053275, and for a 25-1/8 inch spring we have part # SP-221275. For a tandem axle hanger kit we then have the part # AP233.
    view full answer...

  • Replacement Leaf Springs For Tandem Trailer With 6,000-Lb Axles
  • If you are bottoming out with your trailer it can be caused by a weak or broken suspension causing the problem. You want to check for all of the components for any signs of obvious damage. Since leaf springs may flatten out a bit over time you will need to measure the center-of-eye-to-center-of-eye to find the right leaf springs. This should be done when the spring is off the trailer or with the trailer raised so there is no weight on the spring. One of the double-eye leaf springs...
    view full answer...

  • What Are the Correct Replacement Leaf Springs for 6,000 lb Axle
  • There are leaf springs available with measurements close to 25" from center of spring eye to center of spring eye, though the correct one is going to depend on your axle capacity, which should be stamped onto the axle itself. Knowing this information is going to be important to get you the correctly rated springs. The options for you are going to be 6-Leaf Double-Eye Spring # SP-222275 which is for 5,300 lb axles and is 24-7/8" from center of spring eye to center of spring eye. Please...
    view full answer...

  • Dexter EZ Flex Equalizers for 6,000 Pound Axles on a 2006 Heartland Bighorn 5th Wheel
  • The length is good on the EZ Flex system # K71-653-00 but the height may be different depending on where you are measuring that 4-3/4 inches. On the EZ Flex the distance from the center of the mounting hole to the center line between the 2 bottom holes, straight up and down, is 2-7/8 inches. If your 4-3/4 inch measurement is diagonal then you will be good to go with this kit. For a u-bolt kit you can use # APUBR-9. The shocks might actually feel more effective with the EZ Flex kit...
    view full answer...

  • Is There Any Advantage to Using 6K Leaf Spring on 3500-lb Axle on Tandem Travel Trailer
  • You would not like the ride quality with 6K-rated springs on the 3500-lb axles on your 2003 Dutchmen Lite travel trailer. In fact, since you (wisely) plan to replace all four leaf springs at once just having four new 3500-lb-rated springs will have the trailer suspension feeling stiffer than what you're accustomed to. The best way to go is to completely remove one of the springs so you can measure its eye-to-eye length without any tension on it. Do note that after years of use leaf...
    view full answer...

  • 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...

  • Recommended Replacement Leaf Springs and U-Bolts for 2005 Sierra Sport 24 Foot Toy Hauler
  • For your 2005 Sierra Sport 24 foot toy hauler, you will want the U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles # APUBR-9 for each axle, and then you will want the 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long # SP-221275. This will work well with your current EZ-Flex Equalizer.
    view full answer...

  • How to Pick Out Replacement Leaf Springs for 2007 Weekend Warrior Model CR3905
  • I was able to find out that your 2007 Weekend Warrior model CR3905 is triple axle trailer with a GVWR of 16k. That means for each axle you'd need a capacity of at least 5,333 lbs. Which means you most likely have 6k axles. We have a few options for that capacity for leaf springs but you'll need to measure the length of your current springs to be sure. If you have 25-1/4 inch long springs you'd need part # SP111275. If you have 26 inch long springs you'd need part # SP-053275. If...
    view full answer...

  • Replacement/Upgraded Suspension Needed for a 2006 Keystone Raptor 3712TS Triple Axle Trailer
  • It can be difficult to locate information when it comes to suspension components for any trailer, but since you were able to give me ample information about your 2006 Keystone Raptor 3712TS triple axle trailer I have a solution for you! I recommend using the E-Z Flex Triple Suspension System Kit # K71-656-00 as an upgrade to your current suspension system. This has equalizers that measure 5-5/8" center-eye to center-eye and comes with shackles that measure 2-1/4" center-eye to center-eye....
    view full answer...

  • Replacement 6,000 lb Axle Leaf Springs for 2002 Keystone Cougar
  • 3 inch diameter axles typically are 6,000 lb axles so the part # SP-221275 that you referenced would be the correct spring for that capacity. About what lenght do you need? The part # SP-221275 is shorter at 25-1/8 inches or if you need a longer spring in this capacity you'd want the part # SP-053275.
    view full answer...

  • Replacement Leaf Spring for 2007 Weekend Warrior FTL 4005 5th Wheel
  • Spring pack thickness really isn't too important when picking out replacement leaf springs. What is most important is the length of the springs and the axle capacity. We did some research on your trailer and it looks like you have 6,000 lb axles which we have a few options. We have the part # SP-111275 which is 25-1/4 inch long, part # SP-053275 which is 26 inches long, and # SP-221275 which is 25-1/8 inch long. Keep in mind when measuring your old springs that they will have stretched...
    view full answer...

  • How to Determine Axle Capacity to Pick Out Leaf Springs
  • Can you measure the diameter of the axle? That will be a great way to get a ball park on the axle capacity. Typical Axle Diameters Based on Axle Capacity - 1,000-lb - 2,000-lb Axles: 1-1/2 inch - 1-3/4 inch diameter - 3,500-lb Axles: 2-3/8 inch diameter - 6,000-lb - 7,200-lb Axles: 3 inch diameter - 8,000-lb Axles: 3-1/2 inch diameter - 9,000-lb Axles: 4 inch diameter - 10,000-lb Or more axles: 5 inch diameter Most likely the leaf spring part # SP-221275 would be what you would...
    view full answer...

  • Replacement Leaf Springs for a Trailer with Two 6,000 Pound Axles
  • For 6,000 pound axles you will need springs that are rated for 3,000 pounds each. I recommend # SP-221275. This spring is 25-1/8 inches long, 1-3/4 inches wide, and has 4 leaves. It is best to replace all of the springs at the same time so they wear evenly and the ride quality/tire wear is not affected.
    view full answer...

  • Could Replacing Older Trailer Leaf Springs Gain Additional Height to Trailer
  • Most likely your springs are sagging a bit if they are over 10 years old. Since it's a good idea to replace those anyway that's probably a good place to start. In the 7,000 lb capacity we only have one size of 24-7/8 inches as part number # SP-198275. Even going with a new set of 6k springs will be an upgrade. For that we have a few lengths like part # SP-111275 which is 25-1/4 inches long, # SP-053275 which is 26 inches long, or part # SP-221275 which is 25-1/8 inches long.
    view full answer...

  • Spring Hanger Spacing for 26 inch Long Leaf Springs and Availability of Shorter 6k Springs
  • You will want to remove your spring hangers and then weld them in a position that allows the shackles to hang properly. On a spring that is 26 inches eye to eye on center and a single axle trailer you will want the hangers to be up to 1/2 inch less than the spring length so 25-1/2 inches on center between the front and rear hangers. We have two 6k axle leaf springs available that are shorter than 26 inches long. We have the part # SP-111275 which measures 25-1/4 inches and the part...
    view full answer...

  • Leaf Spring Recommendation for 6,000 lb Trailer Axles
  • The heaviest leaf spring available that will fit your current measurement is going to be rated for 6,000 lbs, the 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles # SP-221275. This spring is 25-1/8" long from eye to eye; you need to take into account that your current springs have elongated some so you'll want to go with something shorter. A leaf spring should not be rated for more weight than the trailer's capacity because it will give you a much stiffer ride. I've added a link to...
    view full answer...

  • Leaf Spring Recommendation for 2014 Columbus 5th Wheel with 6k Trailer Axles
  • Picking out springs for a trailer is based on basically two things. The axle capacity of the trailer and the length/width. Since you provided all of that info we can easily help you figure out what you need. So dimensionally old springs tend to stretch a bit as they wear out so going with a spring that is slightly shorter than 25-1/4 inch would be what you'd need. For that the spring I'd recommend is the part # SP-221275. This is a 6k spring that measures 25-1/8 inches in length, and...
    view full answer...

  • Dexter Heavy-Duty Tandem-Axle Trailer Suspension Kit Compatibility With Universal Group Leaf Springs
  • If you use the Dexter Heavy-Duty Tandem-Axle Trailer Suspension Kit for 1-3/4" Wide Double-Eye Springs, # K71-449-00, you can choose to remove the bushings from the 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/8" Long # SP-221275 and swap them with the bronze bushings or you can leave the bronze bushings off and use the bushings in the leaf springs. Leaf springs don't come with a warranty to void other than manufacturer defect, so that is a non-issue.
    view full answer...

  • How Tall is the Leaf Spring Stack for 4-Leaf Double-Eye Spring for 6,000-lb Trailer Axles SP-221275
  • I went out to the warehouse and measured leaf spring # SP-221275 for you. The overall height including the bolt holding the stack together is 2-3/8 inches. Just the leaves by themselves are 1-9/16 inches tall.
    view full answer...

  • Troubleshooting Suspension on 1996 Heritage Boat Trailer with 3500-lb GVWR
  • Thank you for the photo of your boat trailer suspension. If your boat trailer's identification plate indicates a gross vehicle weight rating (GVWR) of 3500-lbs for the loaded trailer then I think your springs could be too heavy, rated for too much weight. Your axle may have its own identification sticker or plate that will let you confirm its own weight rating. If the trailer has one axle and it is rated for 3500-lbs then I would suspect you are right that the previous owner installed...
    view full answer...


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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Cole B
Expert Research:
Jeffrey L
Written by:
Alexander C
Photos by:
Jeffrey L

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