View Cart
6-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles - 29-1/2" Long

6-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles - 29-1/2" Long

Item # SP-161275

lowest price pledge

Retail:$61.21

Our Price: $51.88

You Save: 15%
Trailer Leaf Spring Suspension

Orders above $99 qualify for Free Shipping

Shipping Weight: 26 lbs

Quantity: 
In Stock
SP-161275 - Slipper Springs - 2 Inch Universal Group Springs
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images


  • Springs
  • Leaf Springs
  • Slipper Springs - 2 Inch
  • 29-1/2 Inch Long
  • 8000 lbs
  • Universal Group
Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for an 8,000-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. 6-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles - 29-1/2" Long part number SP-161275 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (26)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Universal Group Trailer Leaf Spring Suspension - SP-161275

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for an 8,000-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: 4,000 lbs
  • Axle capacity: 8,000 lbs
  • Length from center of spring eye to end of spring: 29-1/2"
  • Spring width: 2"
  • Eye diameter with bushing: 9/16"
    • Eye diameter without bushing: 11/16"
  • Leaf thickness: 3/8"
  • Number of leaves: 6
  • Additional dimensions: see table


Hook End Slipper Spring

Part NumberABCDEF
SP-16127513-1/2"27-7/8"29-1/2"14-1/8"16-1/2"3-1/2"


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 hooked 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-161 Universal Group Slipper Trailer Leaf Spring - 6 Leaf - 4,000-lb Capacity

Replaces E5115







Video of 6-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles - 29-1/2" 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-161275 Review

Today we're going to take a look at the 6-leaf slipper spring for 8,000-pound trailer axles. This spring is designed to flex to absorb road shock, provide a nice smooth ride. It helps reduce wear and tear on your trailer and ensures a nice level ride on bumpy and uneven surfaces. This does mount to your trailer frame with hangers or a hanger kit which we do sell separately on our web site. Lots of time we do list on this product page as a related product that hanger than you would need. It does include the nylon bushing right here in the eye. A few specs on this.

The spring capacity is 4,000 pounds. The axle it fits on is an 8,000-pound axle so when this one is used with one on the other side it'll meet your 8,000-pound capacity. The quantity is for one spring. The number of leaves again is six, one, two, three, four, five, six. I'll give you a few dimensions on this.

The spring length which is measured from the center of the eye here to where your bend comes in on the slipper part of it. If we put it on the center and go right there, you can see 29-1/2 inches spring length. The spring width, just rotate this, and then you can see the spring width is going to be right at 2-inches wide. The eye diameter which is the diameter right here of this spring eye is going to be 9/16th of an inch. One note we do want to let you know is that to ensure proper axle alignment and suspension performance, the leaf springs should always be replaced in pairs. That should do it for the review of the 6-leaf slipper spring for 8,000-pound trailer axles..


Customer Reviews

6-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles - 29-1/2" Long - SP-161275

Average Customer Rating:  4.8 out of 5 stars   (26 Customer Reviews)

Slipper leaf spring acts as part of a trailer's suspension system by providing an attachment point for an 8,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes bushing with 9/16" inner diameter.

- SP-161275
by:

My second purchase from etrailer and I am happy to say the results were as expected 1. Items as described 2. Delivery was on time as promised (Of course once it is out the door it depends on the carrier to make the promise good) 3. Customer service is stellar, notifications... we got your order....we shipped it today.... we were notified it was delivered.... are you happy 553120



- SP-161275
by:

Showed up fast the boxes were trashed but every thing was there 510906



- SP-161275
by:

Exactly what I needed to get a trailer repaired and back on the road. Far better quality than the springs that are available locally if they had them in stock. 509038



- SP-161275
by:

As always, great. 502285



- SP-161275
by:

Just what I needed and the price was great shipping was free and came very quickly 420008



- SP-161275
by:

The product I received was excellent and fit perfectly on my trailer 348688



- SP-161275
by:

Springs have been working great with no issues at the one year mark! Thanks so much! 312307



- SP-161275
by:

Great product and shipping was fast. Exactly what I needed. 307884



- SP-161275
by:

nylon bolt hole bushing is war out 262251



- SP-161275
by:

Fast shipping, great service during ord ering! 247690



- SP-161275
by:

Super fast shipping very reasonable rates. etrailer always seems to have those harder to find trailer parts I'm looking for Great to do business with. 236499



- SP-161275
by:

Right parts, at the right price. Very pleased with the prompt shipment, tracking, and follow up email. Would definitely recommend highly to everyone. 212781



- SP-161275
by:

Quick and accurate. I purchased springs to match existing on trailer. I contacted costumer service via phone prior to purchase. The person I talked to was helpful and knowledgeable. I placed the order online on a day they were offering free standard shipping. That saved a chunk of money on a 50lb purchase. I recieved my springs on time and got them installed. 209002



- SP-161275
by:

Overall good product, fast shipping. I would buy from them again. 204563



- SP-161275
by:

I have ordered three hitches from Etrailer. Best experience with a company ever. Best product best service ever. Hands Down. Thanks eTrailer. Ordering a Ball and a ball mount today. 198287



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192453



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192452



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192451



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192450



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192449



- SP-161275
by:

Good product, fast free shipping, excellent customer service, good price 192448



- SP-161275
by:

I put these on my 7000# axle. They fit exactly correct. .I would break at least two springs per year on my delivery trailer. I am hoping that these stronger 8000 # springs will save me a lot of emergency work down the road. I am confident that these are the last springs I buy for this trailer. 189303



- SP-161275
by:

I am a fleet manager and at times it is hard locating parts for some of our older equipment. I needed heavy springs for a heavy duty wagon, and I was able to find them here. The price was competitive, the shipping was quick and the springs were a good fit and I was able to get the trailer back into service. I look forward to doing business with e trailer again 185503



- SP-161275
by:

WOW!! Ordered 6-4000lb leaf springs, late on a Fri evening, got an e-mail conformation as soon as I ordered. Received an e-mail on SATURDAY that my order had been shipped! (FREE SHIPPING) and three days later I had my springs! WOW again! Now that is excellent service. And by the way this is the first review I have ever wrote. SAMUEL P. TWO TOIES TOWING LLC 172504



- SP-161275
by:

Had broken springs on cattle trailer. Your info of your spring was easy to use to match mine for a perfect fit! Highly recommend you to anyone! 144911



- SP-161275
by:

A quick replacement for 2 worn and damaged springs on one of our trailers. This was an exact fit, and the product selection page made an easy job of selecting the proper spring. 112440


26
26

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


  • Leaf Springs for 8K-Rated Axle
  • We do offer both double-eye and slipper-type leaf springs for many axle weight ratings. You can see all of these leaf springs on the page I linked for you. In the 8K axle capacity we offer two slipper-type springs. Part # SP-161275 is a 6-leaf slipper spring that is 29-1/2-inches long. Part # SP-285275 is a 7-leaf spring that measures 26-5/8-inches. Both are 2-inches wide. Please note that leaf springs tend to stretch when they are worn so the length of the old spring you remove...
    view full answer...

  • 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...

  • Spring Spring Hanger Spacing for Spring SP-161275
  • The B dimension on a slipper spring is the distance that should be between the hanger and the mounting point on a slipper spring equalizer. For example the part # SP-161275 that you referenced should have a distance of 24-7/8 inches between the first hanger and the equalizer mounting point. Since equalizers can have different lengths there isn't a standard dimension with this spring. Let's use hanger kit part # AP202-H238 as an example. The first hanger of the hanger kit part...
    view full answer...

  • Recommendation For Slipper Springs That Are 29 Inches Long And 1-3/4 Inches Wide
  • Unfortunately, I do not have an exact match in our available inventory. Often springs flatten and become longer as they get older. If this has happened with your springs then they are longer than when first installed. What I do have that is close and that might work is a 4-Leaf Slipper Spring w/Open Eye End that is 26-1/4 inches long, Item # SP-264275. It is 1-3/4 inches wide and designed for 4,300-lbs axle. Because your total length is 29-1/2 inches and the bolt to spring measures...
    view full answer...

  • Slipper Spring and Tandem Axle Hanger Kit Recommendation for a 14k Trailer
  • Both slipper springs and double eye springs will work just as well as the other as long as they are rated for the weight of the trailer. Typically slipper springs are seen more on the heavier capacity trailers. For an 8k axle rated spring you really only have the option of slipper springs. You would want the # SP-161275 like you referenced. For a tandem axle hanger kit for use with this spring you would then want the part # AP216-H238.
    view full answer...

  • Distance Between Hangers When Installing Slipper Springs
  • The B dimension on a slipper spring is the distance that should be between the hanger and the mounting point on a slipper spring equalizer. For example the part # SP-161275 that you referenced should have a distance of 24-7/8 inches between the first hanger and the equalizer mounting point. Since equalizers can have different lengths there isn't a standard dimension with this spring. Let's use hanger kit part # AP202-H238 as an example. The first hanger of the hanger kit part...
    view full answer...

  • Hanger Spacing for Tandem-Axle Trailer Hanger Kit AP216-H238 and 29-1/2 Inch Slipper Springs
  • When using trailer suspension hanger kit # AP216-H238 with spring E5115, # SP-161275, the distance from the center of the front hanger to the center of the middle hanger AND the distance from the center of the middle hanger to the center of the rear hanger are both 31 inches. Measurements for hanger kits are approximate and it is recommended to mock up the suspension to get the proper spacing prior to permanent installation.
    view full answer...


Do you have a question about this Trailer Leaf Spring Suspension?




  • Why etrailer.com?

    At etrailer.com we guarantee:

  • Highest quality trailer leaf spring suspension for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer leaf spring suspension information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Installed by:
Jeff D
Expert Research:
Jameson C
Written by:
Alexander C
Photos by:
Stacy F

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!

Call 800-298-8924