2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" Long

2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" Long

Item # SP-038275

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Trailer Leaf Spring Suspension

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SP-038275 - Slipper Springs - 1-3/4 Inch Universal Group Trailer Leaf Spring Suspension
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  • Springs
  • Leaf Springs
  • Slipper Springs - 1-3/4 Inch
  • 30 Inch Long
  • 1800 lbs
  • Universal Group
Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,800-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter. Lowest Prices for the best trailer leaf spring suspension from Universal Group. 2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" Long part number SP-038275 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (57)
  • Q & A (16)
  • Videos (1)
  • Photos
  • Why etrailer?

Universal Group Trailer Leaf Spring Suspension - SP-038275

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,800-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: 900 lbs
  • Axle capacity: 1,800 lbs
  • Length from center of spring eye to end of spring: 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: 2
  • Additional dimensions: see table


Flat End Slipper Spring

Part NumberABCDE
SP-03827513-3/4"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.



UNA-038 Universal Group Slipper Trailer Leaf Spring - 2 Leaf - 900-lb Capacity

Replaces WID2







Video of 2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" 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-038275 Review

Today we're going to take a look at the 2-Leaf Slipper Spring for 1,800 pound trailer axles. Now, this is a nice strong, durable steel construction spring. It is designed to flex to absorb road shock and provide a nice smooth ride, which will help reduce wear and tear on your trailer and ensures a nice level ride on any bumpy or uneven surfaces, does mount to your trailer frame with hangers or a hanger kit. We do sell those separately on our website and lots of times we do list those on this product page as a related product. If you notice on the eye and it does include the nylon bushing in the spring eye. Few specs on this, we'll start with the spring capacity on this spring is 900 pounds. Now, when this one is matched with a spring on the other side of the axle, it'll meet the 1,800 pound axle capacity and if you notice, it is the 2 leafs.

Now, there are a couple measurements we're going to give. There's going to be the spring length and the spring length. Now, the spring length will measure from the center of eye to the very end over here. If we put a tape measure on that, you can see right at 30 inches for the spring length. Spring width, which is going to be measured edge to edge right there is going to be right at 1 3/4 inches for the spring width.

Now, the diameter on the eye itself is at 9/16 of an inch. This part number is for a quantity 1 spring. One last note I do want to mention is when go to replace your leaf springs, you want to ensure proper axle alignment and suspension performance, we do recommend to replace the leaf springs in pairs. That should do it for the review on 2-Leaf Slipper Spring for 1,800 pound trailer axles.


Customer Reviews

2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" Long - SP-038275

Average Customer Rating:  4.9 out of 5 stars   (57 Customer Reviews)

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 1,800-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.

- SP-038275
by:

This is a good, light duty spring. I replaced a set that were about 30 years old and these springs were exactly the right size. While the original spring was 4 leaves, this one was only two, but much thicker steel. Over all, I think the trailer ride is better than the old spring, but I miss the nylon bushings that were used before. This spring has a steel sleeve for the shackle bolt. 92147



- SP-038275
by:

Great deal! Shipped fast and fit great on an old Dilly trailer for my Hobie Cat. The right side spring was flattened, so replaced em both and the fit was great. Thanks eTrailer! 379653



- SP-038275
by:

Great online experience with a super price and speedy delivery. 643577



- SP-038275
by:

He's a great set of springs very reasonably priced Freight was reasonable and customer service was outstanding. Installation was very simple and quick had no problems. 565319



- SP-038275
by:

Excellent no issues shipped easily and installed just as easy Thanks 557017



- SP-038275
by:

These leaf springs are amazing! I purchased two springs that replaced the old leaf slipper springs on a single axle toy hauler trailer. The measurement from the eye bolt to the end of the slipper spring was 29 1/4 inches. My old springs measured 32 inches because they were so worn and the 30” leaf slipper springs worked perfect! 529263



- SP-038275
by:

Was able to raise my 38yr old trailer to like new height. Website was easy to navigate to find parts. 524065



- SP-038275
by:

Easy to use website. Received email update when shipped. Great product, prices, and excellent customer service! 492815



- SP-038275
by:

The springs fit perfectly and fully met my expectations...see attached photo of my trailer with new parts installed. Great quality, price, lightning fast delivery, and exceptional customer service from order to drop off at my doorstep. Will recommend and order again. Well done, e-trailer, and Thanks. 482087



- SP-038275
by:

Factory fit, good product. 451601



- SP-038275
by:

They fit amazing, and came in prompt time. Thank you 443413



- SP-038275
by:

Springs arrived so fast and were the right size .The local trailer store tried to sell me oversize springs and told me I would have to cut 2 inches off each one with a torch.Why go to this moron when everything I need is here and fast! 436320



- SP-038275
by:

Order this product for my boy trailer ms was here on time. Fits great and seems to be a great product. Definitely recommend 414169



- SP-038275
by:

The leaf springs were very high quality and you shipped it promptly so I could get the trailer back in service. I will buy from you again!!! 410078



- SP-038275
by:

Perfect! Fixed up my 35 year old trailer's suspension like new. 396735


Comments

All products performed perfectly. Very happy with my purchases. Thanks again.

John B - 06/28/2018

40292

- SP-038275
by:

Needed to replace a broken spring on my ATV trailer. Ordered 2 new springs, as everyone says that you should replace both sides at the same time. Only took a little over an hour to remove both sides and put on new springs. Got to love air tools. PS do not forget to replace your U bolts as well. 380025



- SP-038275
by:

Re-conditioned an old trailer with your kit fit as designed love it !! 371022



- SP-038275
by:

Purchased replacement springs for an older boat trailer. Install required some mild modifications but all was good. 334583



- SP-038275
by:

I received shipment today. Very fast service. I will not be ready to install for a few months. 330538



- SP-038275
by:

Great product, service, and price! 322897



- SP-038275
by:

Great people first time there?? 315526



- SP-038275
by:

every thing you sent worked great! the swivel jack, springs and bolt kit for the axel. I had it installed 45 min after I received it . thank you Dave 299880



- SP-038275
by:

Totally hassel free, part was exactly as pictured on the website, Thanks, Brenden!! 297305



- SP-038275
by:

Great Price, as described, fast shipping, very well made. Thanks 287871



- SP-038275
by:

Great springs. Better than original. T hanks 282747



- SP-038275
by:

Excellent service in every way. 282039



- SP-038275
by:

Installed the springs tonight, have to install the axle with new u-bolt kit yet. The spring pins had threaded grease zerks! Way to go! :-) So far, so good. 281617



- SP-038275
by:

Fast delivery and an exact match plus great customer service 280549



- SP-038275
by:

Leaf springs for boat trailers come in many configurations, but I was able to find some that work at e-trailer.com. 276608



- SP-038275
by:

Needed boat trailer springs and nobody around carried them in 30". Did a search and found etrailer.com had them. Super fast shipping (ordered them on Wednesday and they arrived Friday) ! Perfect fit and got our boat back on the trailer and to the water the next day. I highly recommend etrailer.com. 275355



- SP-038275
by:

as always products worked perfect service and discription on the money and your helpful hints and explaination helped alot thanks john. 261924



- SP-038275
by:

great item,fast delivery,excellent communication,a+++,thanks sam 234513



- SP-038275
by:

my springs were obsolete, ricky helped me figure out my best option, ordered 2 springs and with little effort they fit my trailer great, very pleased, will do bussiness with them again, thank you 231796



- SP-038275
by:

I ordered the springs on Saturday and got them UPS ground Thursday, amazing service, website and product springs fit like a glove many Thanks! 231457



- SP-038275
by:

Product exactly as described. Fast shi pping 206212



- SP-038275
by:

Quick shipping, Great price. 205935



- SP-038275
by:

The whole process was simple and customer service was great, the springs are perfect for my use. Thank You 196736



- SP-038275
by:

These springs fit my trailer perfectly. Finally my trailer sits level again. etrailer has become my go-to for my trailer needs. I'm so glad that I found them on the web. 180945



- SP-038275
by:

Very good web site with good pictures and explanations of parts. Very good prices 159234



- SP-038275
by:

springs arrived in 3 days and fit good 157715



- SP-038275
by:

Quick delivery and very nice parts at a great price 110278



- SP-038275
by:

Just what I needed to fix my snowmobile trailer. Replaced old 4 leaf springs with this one. Everything perfect. From order to delivery I got great communication from etrailer. When shipped, faster ship no extra charge, these guys go above and beyond! Any trailer needs in the future will be bought here. These guys rock!!!! 104430



- SP-038275
by:

A Good buy , and came fast . 96892



- SP-038275
by:

Perfect fit, fast shipping. Many thank s! 90144



- SP-038275
by:

These slipper springs are exactly what that trailer needed, it pulls better and rides a lot better than before. Thank You for a fast deliver and premium product. I placed ya'll (texas slang) on my favorites list for more than just trailer supplies. Again Thanks, Tom Price Dodge, Texas 65358



- SP-038275
by:

We do automotive testing and we can not take pictures of the stuff do or use. I can tell you the spring are used on a special rubber tire roller.for packing snow. 62684



- SP-038275
by:

excellent product and price, but the service was even better! the person who took my late call made a real effort and got my package shipped on the last truck out before the weekend. that really saved me time, so, many thanks! 59978



- SP-038275
by:

Great product, great price, fast shipping. Listed measurements were right on. Thanks e-trailer 58128



- SP-038275
by:

Excellent product description and prompt delivery. I will use this site as my first choice for future trailer parts purchases. Thank you 56260



- SP-038275
by:

arrived faster than expected. the springs are made good .they fit good. 41527


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Show More Reviews

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


  • Replacement Slipper Springs to Replace 32 Inch Long Springs
  • The 30 inch slipper springs we carry don't have a measured radius but the 28 inches you're looking for will work just fine. Your 32 inch springs were likely a little shorter than that originally and have flattened over time. Although probably not the full 2 inch difference but enough that our 30 inch springs will work on your trailer. We carry three different weight capacities that are 30 inches: 4-Leaf for 3,700 pound axles # SP-040275 3-Leaf for 2,900 pound axles # SP-039275 2-Leaf...
    view full answer...

  • Replacement Slipper Springs for 1985 Harding Boat Trailer
  • I do have options for you but exact replacements for old boat trailers are hard to come by. In the majority of cases, items will need to be altered for an exact fit which I assume is what is going to need to be done on your trailer as well. We don't have a slipper spring that is 1-3/4" wide x 28" long (center of eye to end of spring) with a 2,500, 3,000, or 3,500 lb capacity. However, leaf springs will fatten out over time which means the leaf spring that was originally installed on the...
    view full answer...

  • Recommendation For Replacing Leaf Springs And Hangers
  • I am glad to make a recommendation for your needs based on the pictures and information you sent. We have a few options to consider for a 30 inch long leaf spring that is 1-3/4 inches wide. For an 1,800 lb axle that has 2-Leaf Slipper Spring with flat end option, you would use Item # SP-038275. For a 2,900 lb axle that has 3-Leaf Slipper Spring with flat end option, you would use Item # SP-039275. A U-Bolt Kit for a 1-1/2 inch wide square axle for 1-3/4 inch springs is Item #...
    view full answer...

  • 30 inch Long Slipper Spring Recommendation for Boat Trailer
  • We have a few options for 30 inch long slipper spring that is 1-3/4 inches wide. For a 3,700 lb axle option we have the part # SP-040275. For a 2,900 lb axle option we have the part # SP-039275. For an 1,800 lb axle you would want the part # SP-038275.
    view full answer...

  • Replacement Trailer Suspension Components
  • In a typical leaf spring trailer suspension a spring seat like # TRSS300 is welded to the axle but the u-bolt plate is not. The u-bolt plates are bolted around the axle and leaf spring and these hold the spring in place on the spring seat and to the axle, as noted on your photo. You can also refer to the linked article on slipper spring suspensions for more on the details of how these parts work together and on how to measure. You'll want to completely remove one spring from the suspension...
    view full answer...

  • Replacement Slipper Springs for a 2,100 lb Trailer
  • The most important factor in picking out a new leaf spring for a trailer is to match the capacity needed. Going with a 3,500 lb spring for a 2,100 lb trailer is going to give you a very harsh ride. For a spring similar to the # WIG4 that is better rated for your trailer we have the # SP-039275 which is for a 3,000 lb axle or part # SP-038275 for a 2,000 lb axle. If you need all 2,100 lbs of your trailer's capacity you would have to go with the # SP-039275. If you have a 2 inch square...
    view full answer...

  • Replacement Slipper Spring Recommendation to Replace 31 inch Long Spring
  • For a slipper spring that would work well for your application you would want the part # SP-038275. This is a 2k rated spring that is 30-1/4 inches long. This should be a much softer spring than what you have as it looks like your spring would be a higher capacity than this one.
    view full answer...

  • Recommended Leaf Springs for 1200 lb Trailer
  • For your 1200 lb trailer capacity, I recommend the 2000 lb leaf springs like # SP-169275. These will have a 1000 lb capacity each. These come in different lengths, so I have attached the options for you in a link. If you have slipper springs instead of double eye springs, then the 2-Leaf Slipper Spring w/ Flat End for 1,800-lb Trailer Axles - 30" Long # SP-038275 are the only option we have that won't give you too rigid a ride on your trailer.
    view full answer...

  • Which End Faces Forward When Installing a Slipper Spring
  • When installing a slipper spring, like the 2-Leaf Slipper Spring # SP-038275, you will install it so that the end with the eye is oriented towards the front of the trailer and the open end is facing the rear part of the trailer. You will need to use hangers when installing slipper springs and avoid shackle straps. Since one end of the slipper spring is open and not "fixed" it will not sit properly if shackle straps are used. I have attached a review video for this specific slipper...
    view full answer...

  • Can the 2 Leaf Spring on my 1977 Boat Trailer be Replaced with the 3 Leaf Spring # WIF3
  • Over time leaf springs will flatten making them a bit longer than their than their original length. You mentioned that the springs on your 77 boat trailer measure 31-1/2 inches so the 3-Leaf Slipper Spring, # SP-039275, measuring 30-1/4 inches would work as a replacement for your current 2 leaf springs. Part # SP-038275 that you mentioned is a 2 leaf spring for 2,000 pound axles. Please keep in mind that although you will be increasing the weight capacity of the springs by upgrading...
    view full answer...

  • Replacement Slipper Spring for a Jon Boat Trailer
  • When replacing trailer leaf springs you are correct in that you want to do both sides at the same time. You can go a little over in capacity but if you go too much the suspension basically wouldn't function as it would be too stiff to move and absorb bumps. When picking out a slipper spring the most important dimension you need to get from your old springs is the length of the spring when measured from the center of the bolt hole to the other end of the spring. The 2-Leaf Slipper...
    view full answer...

  • Are Trailer Leaf Springs Directional, Is there a Front and Back
  • Double eye leaf springs like the part # SP-169275 do not have a front or back designation. Slipper springs like the part # SP-038275 do have a front and back.
    view full answer...

  • Slipper Spring Recommendation for a Jon Boat Trailer
  • Based on the dimensions you listed I think the part # SP-264275 would fit. It's 26-14 inches long, has 13-1/4 from the eye to the mid point of the spring and has an overall height of 3-1/2 inches. Each spring is rated at 2,050 lbs. For a lighter rated spring with very similar dimensions that would work check out part # SP-038275. It has a 1,000 lb capacity. It doesn't have the hook at then of the spring, but it would work much better. Sounds like you were already planning on doing...
    view full answer...

  • How to Measure for Replacement Slipper Spring on a Cox Tent Trailer
  • A similar leaf spring that we have is the Universal Group 2-Leaf Slipper Spring # SP-038275 which is 30" long and rated for a 1,800 lb axle. The 30" is measured from the center of the eye to the end of the leaf spring (see attached picture). The spring is 1-3/4" wide and has an eye diameter of 9/16" with the bushing. Let me know if this doesn't fit your specs and I can see if we have something else for you.
    view full answer...

  • Where is 30 Inch Measurement Taken on Slipper Spring # SP-038275
  • 2-Leaf Slipper Spring # SP-038275 measures 30 inches from the center of the eye to the very end of the spring. I included a picture showing some measurements for this spring: A is 13-3/4 inches B is 30 inches C is 15 inches D is 17-3/4 inches E us 4-7/8 inches It depends on the design of the slipper spring by a 27 inch double eye spring would connect to the hangers at about the same locations as a 30 inch slipper springs. The two styles use different hangers though.
    view full answer...

  • How To Find the Correct Replacement Leaf Spring for an Old Row Boat Trailer
  • In order to find out what trailer leaf spring is correct you will need to measure from the center of the eye to the end of the other side while there is no weight on the trailer. Since you have a slipper type spring you will also need to measure the width. I have attached a list of options for you once you get the above info but from the photo it looks like you have need the 2-Leaf Slipper Spring w/ Flat End part # SP-038275 which measures 30" long and is 1-3/4" wide. I recommend you replace...
    view full answer...


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Info for this part was:

Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Adam R
Written by:
Alexander C
Photos by:
Stacy F

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