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  1. Trailer Leaf Springs
  2. etrailer
  3. 25-1/8 Inch Long
  4. Double Eye Springs
  5. 2500 lbs
  6. 1-3/4 Inch Wide
3-Leaf Double-Eye Spring for 2,500-lb Trailer Axles - 25-1/8" Long

3-Leaf Double-Eye Spring for 2,500-lb Trailer Axles - 25-1/8" Long

Item # e66SR
Our Price: $34.99
Trailer Leaf Springs
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Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,500-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter. Great Prices for the best trailer leaf springs from etrailer. 3-Leaf Double-Eye Spring for 2,500-lb Trailer Axles - 25-1/8" Long part number e66SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Leaf Springs - e66SR

  • 25-1/8 Inch Long
  • Double Eye Springs
  • 2500 lbs
  • 1-3/4 Inch Wide
  • 3 Leaf
  • etrailer
  • Painted

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,500-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: 1,250 lbs
  • Axle capacity: 2,500 lbs
  • Length from center of spring eye to center of spring eye (unloaded): 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: 3
  • Additional dimensions: see table


Double-Eye Spring Diagram

Part NumberABCD
e66SR12-9/16"13-5/16"25-1/8"3-3/16"


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.



e66SR etrailer Double Eye Trailer Leaf Spring - 3 Leaf - 1,250-lb Capacity

Compares to SP-219275





Customer Satisfaction Score:


Customer Reviews

3-Leaf Double-Eye Spring for 2,500-lb Trailer Axles - 25-1/8" Long - e66SR

Average Customer Rating:  4.6 out of 5 stars   (32 Customer Reviews)

Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,500-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushings with 9/16" inner diameter.

by:

Always very communicative customer service. Received/packed/shipped my order on a sunday(unheard of). It was delivered two days later. And that was the free standard shipping. I wish I had a need to do business with etrailer more frequently.

Etrailer Expert

Brooke M.

3/19/2024

We do too! All joking aside, thank you for the review, and we do hope to have you back soon.



by:

Service was fast,appeared to be quality .im not happy with the springs after a year.my boat and trailer weighs 4200 lbs and the rated gvwr on the trailer frame is 5000lbs.i replaced my original single leaf springs with the 3 leaf from etrailer,4 at 1250lb each should have equalled my gvwr and exceeded my boat weight.they appeared fine at first but gradually over the year they started sagging and my shackles started hitting the frame.the springs visibly flattened and lengthened causing the problem.after calling etrailer they informed me there is no warranty and nothing they can do.i think their spring rating is a bit off.im going with slightly heavier springs next time



by:

Outstanding products and staff my go to website before anyone else this particular project I ordered the wrong springs, I call etrailer expecting to eat the cost of my mistake and instead they sent me a return label for the return of my mistake and they immediately sent me the correct springs which I received in a couple days, this is why I continue to support etrailer because they support me.



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Great product but your shipping department needs to do a better job of packing the items. 2 springs were half way out!!



by:

This set of leaf springs was excellent choice for my 4’x8’ utility trailer, handles great.



by:

Constructed well - beefy / strong



by:

The springs look like good quality and the price was good. Delivery was amazingly fast.



by:

My order shipped quickly. Exact fit.
It
took a while to figure out my exact spring I needed since they have such a huge selection!
But I called and a service representative was able to help me find the part number I needed.



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This order took a very long time.



by:

Everything fit and arrived on time couldn’t ask for anything more great service



by:

The customer service and knowledge I get from Shawnee is what will keep me coming back. She’s a true asset to etrailer, and the complete line of products offered (in stock) is second to none! Thank you!



by:

Exactly as described on website, fast shipping will definitely use again



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Fast delivery, good price, quality pr oduct



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Perfect



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See what our Experts say about this etrailer Trailer Leaf Springs

  • Leaf Springs and Hanger Kit for Single Axle Trailer with 2-3/8 OD Axle
    The correct hanger kit to fit the # e66SR Leaf Springs that will give you the appropriate clearance is the Single-Axle Trailer Hanger Kit for Double-Eye Springs - 3-1/4" Front, 1-1/4" Rear # APS4 . This will provide 3-11/16" clearance taking into account the axle diameter and spring pad you mentioned.
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  • Replacement Leaf Springs for 1998 Flagstaff Model 206
    For your 1998 Flagstaff pop-up camper. M.A.C. Model 206 the replacement leaf spring part # e66SR would be your best option. It's for a 2,500 lb axle and has a 25-1/8 inch length which would work great for what you have.
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  • Double-Eye Leaf Spring for a Trailer Rated for 1 Metric Ton 2,200 Pounds
    Since a metric ton is approximately 2,200 pounds you will need to go with leaf springs that are rated for at least 1,100 pounds. I recommend spring # e66SR which is rated for 1,250 pounds. With one of these springs on each side of the trailer the capacity will be 2,500 pounds. I have included a link to a video review of this spring for you and a link to our help article on double-eye suspension.
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  • Can Unique Leaf Springs be Replaced on a Very Old Trailer
    I believe the hubs are for 2,000 or 2,200 pound agricultural axles which is why the springs look so different. These hubs are designed for very low speed applications (5 to 10 miles per hour according to HADCO) so if you plan on going faster than that you will need to look at replacing the axle and hubs. You could use 2 of spring # e66SR. Each spring has a capacity of 1,250 pounds. If a new hanger kit is needed you can use # APS1. When used with spring e66SR the center to center distance...
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  • Does 3-Leaf Slipper Spring w/ Radius End Require a Bushing for Rear of Spring
    For the 3-Leaf Slipper Spring w/ Radius End # e99SR you only need the bushing on the one end, the other end will either sit over a bolt or will fit into a hanger like part # 115706S. If you have a double-eye spring on your trailer then you'll need something like the 25-1/8" Long 3-Leaf Double-Eye Spring # e66SR instead. Attached are some videos for you to check out as well.
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  • Can Trailer Leaf Springs Lose Their Weight Capacity Over Time
    Springs can wear out over time and lose ability to support the same amount of weight they once were capable of. It sounds like you are in need of a new set of springs on your trailer. You will need to determine what weight capacity springs you will need. The same plate that told you what tire size was recommended for the trailer should also have the axle capacity. The amount of springs doesn't necessarily indicate the capacity of the spring. If you need a 2,500 lb axle spring you would...
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  • Replacement Leaf Springs For a 2006 Starcraft 2406 Pop Up Camping Trailer
    Looking at the specs for your 2006 Starcraft 2406 pop up camper it looks to have a 2,500lb axle. The only double eye leaf spring we have with that weight rating is the 3-Leaf Double-Eye Spring # e66SR which has an eye to eye measurement of 25-1/8". Since this measurement is for the spring without any weight you are best to measure from the center of the spring eye to the spring center along the radius of the spring since the spring center to spring center will get longer when weight is...
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  • Leaf Spring Recommendation for Boat Trailer with 4,425 lb Capacity and 26 inch Long Springs
    You are on the right track for picking out springs. You would want to split the total trailer capacity in two and then go with that number when picking out springs. Our springs are rated per axle though. The closest to that would be the part # e66SR which is a 2,500 lb axle spring that measures 25-1/8 inches in length. Springs tend to stretch over time so yours being older and 26 inches would match well with this.
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  • Spring Rate and Deflection of etrailer e66SR 2500 lb Leaf Spring
    I managed to reach our manufacturer of the # e66SR 2500 lb leaf spring. You're correct, the capacity of a pair of springs is 2500 lbs so the capacity of each spring is 1250 lbs. The spring rate is 780-960 lbs/in. The deflection, at the rated capacity of 1250 lbs, should be around 1.43 inches. This would result in a loaded height around 1.75 inches.
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  • 2,500 lb Axle Trailer Leaf Spring Recommendation
    As long as you stay under the capacity for the springs you are fine. They are designed to be safe and reliable up to their capacity so going with heavier duty springs doesn't really gain anything. It just might give you a harsher ride quality. We have 2,500 lb axle springs as part # e66SR which would work well for you. These are 25-1/8 inches long.
    view full answer...
  • Recommended Leaf Springs and U-Bolt Kit for New Trailer Axle
    The Dexter Idler Trailer Axle w/ Hubs # 20545I-EZ-60-10 referenced in your question is a 2,200 pound axle. In order to choose the correct size leaf springs, I recommend measuing the length of your existing/previous set. For example, the 3-Leaf Double-Eye Spring # e66SR has a length of 25-1/8 inches from the center of spring eye to the center of spring eye. You will want to get as close as you can to the length of your previous leaf springs, keeping in mind that they may have stretched...
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  • What Should Hanger Spacing Be for Trailer Leaf Springs that Measure 25-1/8 inch
    If you have the leaf spring part # e66SR that you referenced which is 25-1/8 inches long the center to center dimension you'll need to use for the spring hangers would be 25 inches. This would be the same for the leaf spring part # e54SR you mentioned as well.
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  • Options for Replacing Double Eye Springs on 60 Year Old Boat Trailer
    In this case I would choose a new set of double eye springs and then weld new spring hangers accordingly. I have attached a link to our double eye springs for you. For example, you could go with the 3-Leaf Double-Eye Spring, # e66SR, which has a 1,250 lb spring capacity (2,500 lb axle capacity). Since your boat trailer is 60 years old it is very unlikely that you are going to find parts that will work without any modifications and if you were to choose to switch to slipper springs, you...
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  • What is the Correct Distance Between the Spring Hangers When Using a e66SR Leaf Spring
    The distance of 25-3/4 inches would be the correct distance to have between the spring hangers. You have to consider that as the the leaf spring compresses from the weight of the trailer it will flatten out and the overall length of the spring will increase so that the shackle will face the right direction.
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  • Comparing Amount of Drop of Torflec Axle with a Drop Axle
    The 10 degree up Torflex axle will have the center of the spindle sitting about 0.31" below the bottom of the frame of your trailer under no load. When it is under a full load it will sit about 1.45" above the bottom of the frame of your trailer. If you are wanting a Torflex axle that sits lower then you need the 22.5 degree which has the center of the spindle sitting about 0.52" above the bottom of your frame under no load. Under a full load that will sit about 1.82" above the bottom...
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  • Replacement 2,200 lb Trailer Leaf Spring that is 25-1/4 inches Long
    25-1/4 inch leaf springs are a very common length. For a leaf spring that is rated for a 2,500 lb axle that is 25-1/4 inches long you would want the part # e66SR. If instead you meant 2,200 lbs per spring you would want the # e44SR instead.
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    Image 1 for
  • How Much Space Should be Between the Top of the Axles and the Bottom of a Boat Trailer
    Normally when using hanger kit # AP233-H248 with spring # e66SR the distance from the bottom of the frame to the center of the axles is going to be approximately 4-1/2 inches. Subtract half the width of the frame then to the top of the axles that would be 3-5/16 inches. Two inches might work out fine depending on how far the suspension travels but more height would likely be needed considering the heavier load. Hanger kit # APT4 would provide more height since it has taller hangers than...
    view full answer...
  • Hanger, Leaf Spring, and U-Bolt Kit Recommendation for Dexter Axle # 20545I-EZ-60-15
    The Dexter axle part # 20545I-EZ-60-15 is a 2,200 lb axle so for springs you'd want the 2,500 lb spring part # e66SR which is the closest we offer to a 2,200 lb axle spring. Then for a u-bolt kit you'd want the part # APUBR-10. The part # APS4 would be a great single axle kit to use as well.
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  • Converting Tandem to Single Axle Boat Trailer
    The Dexter Trailer Idler Axle w/ Hubs part # 20545I-EZ-72-10 does not come with leaf springs but we do have the correct ones for you as well as the leaf spring hangers, shackle straps, u-bolts, and everything else you need to convert to a single axle. For the leaf spring, I recommend using the 3-Leaf Double-Eye Spring part # e66SR. For the suspension kit, I recommend the Single-Axle Trailer Hanger Kit for Double-Eye Springs part # APS4. For the u-bolt kit, I recommend the U-Bolt Kit for...
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    Image 1 for
  • Parts Needed To Replace Slipper Springs With Double Eye Springs
    If your trailer truly has a front and rear bracket for double eye springs you can absolutely use the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 27" Long # SP-210275 you were looking at as a replacement. With that said while the hangers may look alike, they are typically not the same. This spring is designed for 3500lb axles so you will want to make sure that your trailers axle has the same rating. If the spring is rated too high you will get a stiff ride, and if the spring is...
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  • Replacement Leaf Springs for a Boat Trailer Rated for 3,740 Pounds Gross Trailer Weight
    The double-eye spring we have that is closest to the measurements you have provided is # e27SR. It measures 26 inches eye center to eye center, is 3-3/4 inches from the top center of the stack to the centerline of the eyes, and has 6 leaves. The spring has a capacity of 2,250 pounds. If you can tell me the center to center distance between the hangers then that can help determine the right replacement spring, too. This spring uses 9/16 inch bolts such as # 166081. The hanger that you...
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  • Can Pop Up Trailer Have Slipper Springs Replaced with Double Eye Springs
    Yes, you can go from a slipper spring suspension setup on a trailer to a double eye setup. It would be a matter of picking out the correct rated springs and then replacing the hangers and you'd be set. Since you said it's a pop up camper most likely a 2,500 lb spring like part # e66SR would work well for you. If you need a different spring rating let me know and I'll see what would work best. Then for a hanger kit the part # APS1 would be a great option as well.
    view full answer...
  • How to Determine if a 108 Triple Axle Fender Would Work with the Hanger Kit part # APTT5
    The distance between the axle centers with the # APTT5 when used with a 25-1/4 inch spring like the # e66SR will be 34 inches. You would need to compare that dimension to the dimension of the wheel centers on the fender to see if this kit would fit. Tire size will play into this as well. You will need to consider this also.
    view full answer...
  • Hanger Spacing Recommendation for 2,500 lb Leaf Springs on a Trailer
    When using the hanger kit part # APS3 with the leaf spring part # e66SR you will want to have a distance of 24-7/8 inches on center between the front and rear hanger.
    view full answer...


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
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Manda E
Employee Mike S
Written by:
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Employee Andy C
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