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  1. Trailer Leaf Springs
  2. etrailer
  3. Slipper Springs
  4. 30 Inch Long
  5. 2900 lbs
  6. 3 Leaf
3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long
etrailer

3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long

Part Number: e49SR
In Stock
$50.50
Trailer Leaf Springs
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Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,900-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter. Great Prices for the best trailer leaf springs from etrailer. 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long part number e49SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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etrailer Trailer Leaf Springs - e49SR

  • Slipper Springs
  • 30 Inch Long
  • 2900 lbs
  • 3 Leaf
  • 1-3/4 Inch Wide
  • Standard Grade
  • etrailer
  • 9/16 Inch Eye
  • Nylon Bushings

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,900-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.


Features:

  • Leaf spring acts as part of your trailer's suspension system
    • Provides attachment point for your trailer's axle
  • Multiple leaves allow flexibility to absorb road shock
    • Allows for a smooth ride
    • Reduces wear and tear on trailer
    • Ensures level ride on bumpy and uneven surfaces
  • Sturdy steel construction
  • Nylon bushing included
  • Pre-mounted hangers or aftermarket hanger kit (sold separately) required for installation
    • Eye of spring attaches to hanger mounted on trailer frame
    • Slipper end slides into hanger or equalizer


Specs:

  • Quantity: 1 leaf spring
  • Spring capacity: 1,450 lbs
  • Axle capacity: 2,900 lbs
  • Length from center of spring eye to end of spring (unloaded): 30"
  • Spring width: 1-3/4"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 7/8"
  • Leaf thickness: 3/8"
  • Number of leaves: 3
  • Additional dimensions: see table


Flat End Slipper Spring Diagram

Part NumberABCDE
e49SR13-5/16"30"15"17-3/4"4-7/8"


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.


Slipper leaf springs attach to hangers that are welded onto your trailer. The eye of this spring will attach to the front hanger with a suspension bolt. The flat slipper end of the spring will slide into the rear hanger. If you have a tandem- or triple-axle trailer, the slipper end will slide into the equalizer that connects multiple springs. The shape of the slipper end of a leaf spring may vary slightly due to differences among trailer manufacturers. Because of this, it's important to check your leaf spring's slipper end before purchasing a replacement spring.


To mount this spring, you will need hangers, a suspension bolt, and possibly a spring keeper bolt, depending on the design of the rear hanger. If you are simply replacing a spring, you may still have hangers welded onto your trailer, but it would be wise to replace the bolts as they can experience wear. It is also recommended that you replace the other leaf spring in your setup at the same time. Because springs can sag and elongate as they wear, this new spring may not exactly match the old one, and the alignment of your trailer could be affected.


If you are fabricating a trailer, you will need to purchase a hanger kit for installation. To determine the type of hanger kit that you need, you must know the specific type of leaf spring that you have, as well as your axle capacity. Depending on the hanger kits used with them, springs can be configured to work for single-, tandem- or triple-axle applications. Hangers and other suspension components can also be purchased separately if there isn't a complete kit that works for your setup.



e49SR etrailer Slipper Trailer Leaf Spring - 3 Leaf - 1,450-lb Capacity

Compares to SP-039275




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Customer Satisfaction Score:

Ratings & Reviews

4.8

263 reviews
Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 2,900-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.

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See what our Experts say about this etrailer Trailer Leaf Springs

  • 4.80-12 Trailer Tires Wearing in Middle Could it be 30 Inch Slipper Springs
    Hi Gary, Yes, it is possible the bounce is causing the issue with your tires wearing out more in the middle. You may try lowering the psi in the tires to help stop the bouncing, or going with a lower-rated tire like the load range B Kenda # AM10060. This has a 785 lb per-tire capacity, and it is important to makes sure the tires have a capacity that meets or exceed the GVWR of your trailer. That can be tough with a homemade trailer, of course, so I recommend weighing it fully loaded to...
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  • Can I Replace the Leaf Spring on My Boat Trailer with a Flat End Leaf Spring?
    Hello John, Great question. If you have a double eye leaf spring on the trailer, then you will not be able to replace it with the 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # e49SR. What kind of leaf spring do you have on your set-up? What is the axle capacity? What is the measurement from eye to eye with the weight off the spring? It is normal to have a measurement that is longer than what you need as they do stretch over time. I attached some images to show...
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  • Is There a 3-Leaf Flat End Slipper Spring with a Galvanized Finish?
    Hey Roger, thanks for reaching out! We have the 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # e49SR that should work for your application. These aren't available with a galvanized finish, and the 30" measurement is from the center of the eyelet to the very end of the spring without a load on it. Does this look like it will work, and is the weight rating on par with what you're needing?
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  • Replacement Suspension For a Old Trailer With 32-1/4" Slipper Springs and 1-3/4" Axles
    The longest 1-3/4" wide slipper spring we carry is 30" from the center eye hole to end of the flat slipper end. We have springs for 1,800lb # e29SR, 2,900lb # e49SR and 3,700lb # e89SR axles. With your axle diameter being 1-3/4" in diameter it likely is only a 2,000lb axle. All the springs above have a 15" length from center of eye to center of spring pack along the curve. The center of spring to end of spring along the curve is only 17-3/4". If this will not fit your application you...
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  • Replacement for 32 Inch Long Slipper Spring
    I may have a solution, but unfortunately we do not have a 32" long 4-leaf slipper spring. In addition to length, you also need the width and capacity when choosing replacement slipper springs. The leaf count doesn't matter. Assuming you're looking for 1-3/4" wide slipper springs for a 2,900 lb axle you may still be able to use the # e49SR. The length is measured from the center of the eye to the end of the slipper. This measures 30" long, but if your existing leaf springs are flat they...
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  • How To Properly Measure Slipper Springs For Your Trailer's Leaf Sping Suspension
    To properly measure your leaf springs you'll want to lift the trailer by the frame to take the weight off of the suspension and then measure from the center of the eyelet straight across the spring to the end of the slipper (pictured below). From there you'll also need to know the capacity of the axle so that you can get a matching capacity leaf springs. Whenever you change out a leaf spring you'll want to change out both sides of the axle. If you really do have a 30" length then we have...
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    Image 1 for
  • Upgrading Boat Trailer Suspension For Highlander 16' Trailer For 2,000LB Boat
    My first concern is determining the weight of your boat and trailer. It sounds like your trailer would have come with a 2,000lb axle as the Loadstar 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel # AM30670 has a maximum weight rating of 990lbs per tire. If your boat is over the 2,000lbs this would explain why your axle and springs are damaged. I can help you find the suspension components needed to increase your weight capacity but you should check with the trailer manufacturer to...
    view full answer...
  • Where Should End of Slipper Spring Sit On Hanger on Single Axle Trailer
    Yes, the end of a slipper spring like the # e49SR will be very close to the hanger bolt in the unloaded position. There is no exact distance or placement, but it needs to allow for full suspension travel once installed. If the hanger is near the end of the slipper spring the flat end will move through the hanger once it is loaded and the spring compresses. I have attached a helpful article on slipper spring trailer suspension for your reference.
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  • 1-3/4 Inch Slipper Spring That is 30 Inches Long and Over 2,500 lb Capacity
    We have a couple of slipper springs that may work for you, as they are 1-3/4 inches wide, measure a total of 30 inches, and have the capacity you need. Springs do elongate over time, but you may have to have your brackets re-positioned if the 30 inch length isn't enough (this is the longest available for 1-3/4 inch or 2 inch springs). You will want to get a spring that is as close to your axle capacity as possible without going under it's capacity. - 2,900 lb Axle: 3-Leaf Slipper Spring...
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  • Replacement Slipper Spring for 1986 Coleman Sequoia
    The best option we have is the trailer leaf spring part # e49SR which is for a 2,900 lb trailer axle and has an overall length of 30 inches and is 1-3/4 inches wide. This might be a little longer than what you have now but since it has a straight end and not a curved end that shouldn't be an issue.
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  • Is There Plastic Wear Pad Between 1-3/4 Inch Wide Slipper Spring e49SR & Frame
    Nope, there is not any type of plastic wear bad to go between the 1-3/4" wide 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # e49SR and trailer frame.
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  • Replacement Slipper Leaf Spring for a 14' Aluminum Boat Trailer with 28" Slipper Spring
    Hey Jarrod, thanks for reaching out! I believe what you're looking for is the 30" Long 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles # e49SR, although this may be a bit longer than what you currently have. If you take the weight off of your trailer and measure from the center eye to the place where the spring rests in the hanger I can see if we have something closer to the length that you have.
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Info for this part was:

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