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Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye Springs

Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye Springs

Item # K71-358-00
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Trailer Leaf Spring Suspension
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Shipping Weight: 6 lbs
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Upgrade your single-axle trailer's suspension with this heavy-duty hardware kit. 1/2" Thick, sturdy steel shackle straps replace the standard shackle straps on your trailer's double-eye leaf spring suspension for heavy-duty applications. Lowest Prices for the best trailer leaf spring suspension from Dexter Axle. Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye Springs part number K71-358-00 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (18)
  • Q & A (34)
  • Videos (1)
  • Photos
  • Why etrailer?

Dexter Axle Trailer Leaf Spring Suspension - K71-358-00

  • Suspension Kits
  • Spring Mounting Hardware
  • Double Eye Springs
  • Single Axle
  • Dexter Axle

Upgrade your single-axle trailer's suspension with this heavy-duty hardware kit. 1/2" Thick, sturdy steel shackle straps replace the standard shackle straps on your trailer's double-eye leaf spring suspension for heavy-duty applications.


  • Suspension upgrade kit is ideal for heavy-duty applications
    • Included 1/2" thick steel shackle straps will last longer than standard shackle straps
  • Wet bolts have built-in grease zerks
    • Fast, easy lubrication helps keep moving parts functioning at their best
  • Bronze bushings reduce wear and tear
  • Quick, simple installation
    • Shackle straps attach to springs and rear hangers to suspend leaf springs
    • Included bolts, nuts, bushings replace your existing suspension hardware
  • Includes:
    • 6 Locknuts
    • 6 Wet bolts
    • 4 Bronze bushings
    • 4 Shackle links


  • Application: single-axle trailers with double-eye leaf springs
  • Axle capacity: 3,500 lbs - 7,000 lbs
  • Shackle strap dimensions: 4-5/8" long x 1-1/2" wide x 1/2" thick
    • Length from center of bolt hole to center of bolt hole: 3-1/8"
  • Bolt hole diameters: 0.578"
  • Bushing dimensions:
    • Outer diameter: 11/16"
    • Inner diameter: 9/16"
    • Length: 1-3/4"

Easy Installation

It's easy to upgrade your trailer's standard suspension with this set of heavy-duty shackle straps. First, disconnect your leaf springs from the front and rear hangers. Then reconnect the springs to the front hangers and suspend the springs from the rear hangers using these thick shackle straps and the included bolts, bushings, and locknuts.

K71-358-00 Dexter Heavy Duty Axle Suspension Upgrade Kit w/ 1/2" Thick Shackle Links - Double Eye Springs - Single Axle

Video of Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye Springs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Dexter Axle Trailer Suspension - Leaf Spring Suspension - K71-358-00 Review

Customer Reviews

Dexter Heavy Duty Suspension Upgrade Kit for Single Axle Trailers - Double Eye Springs - K71-358-00

Average Customer Rating:  4.9 out of 5 stars   (18 Customer Reviews)

Upgrade your single-axle trailer's suspension with this heavy-duty hardware kit. 1/2" Thick, sturdy steel shackle straps replace the standard shackle straps on your trailer's double-eye leaf spring suspension for heavy-duty applications.

- K71-358-00

Product looks really sturdy, definitely worth the investment. 526014

- K71-358-00

very happy ,top quality ,shipped fast. 510217

- K71-358-00

Shackles are beefy, greased easily (I tested them before install). Much better than the factory original which had already worn after only 30,000 miles or so. Being able to lubricate is a wonderful thing! 570429

Still great. Whenever I replace my trailer, this will be one of the first tweaks I do before it is actually needed.
Gary - 10/01/2019


- K71-358-00

The Dexter heavy duty shackle kit was simple to install. The kit included all necessary hardware and easy to understand instructions. The ability to be able to keep the bolts greased is a plus. 465493

- K71-358-00

These replacement shackles and greaseable bolts were exactly what my camper needed. The manufacturer should have used these. 466936

- K71-358-00

These should be standard on all new trailers/5th wheels! It borders on criminal that the great majority of new manufacturers use the thin metal straps that wear through to the edge in 25,000 miles or less creating a serious and possibly fatal risk of the axle breaking loose! These thicker, stronger straps with metal bushings - not plastic like on the O.E. insure durability, strenth and reliability. Plus, they can be periodically lubricated - another common sense feature missing from the O.E. units. While it took a few hours to install, it is a relatively simple and worthwhile upgrade that I would encourage others to consider. Plus, the trailer weight shakes less and flows better over rough pavement. Our unit is a 28' fifth wheel... but these are appropirate for any size TT or fifth wheel. 605230

- K71-358-00

Another great product from Etrailer by Dexter. The shear size difference between the old shackles is huge. These are definitely Heavy Duty and will last a long time over the small stock ones. I like that all the bolts have grease fittings for easy maintenance. These shackles are Amazing and I will be installing a set on my Dads trailer this year. Great product and always great Customer Service. 558681

- K71-358-00

It was what I ordered. Description of the item was excellently stated. Item was delivered in a timely fashion. I had to send an email to request for the UPS tracking number. Other than that, I have no complaints and the product is what I wanted. Thank you for a great product, delivered in a quick time frame. Thicker shackles with the wet bolts are definitely better than the stock ones. 344754

Leonard - 02/24/2018


- K71-358-00

I just received this product so it's not installed yet. So my high rating is based on: 1- It is exactly as pictured and described. 2- Quick delivery from time of order placement. 3- Price. If there is a better price out there I didn't find it. I have ordered various items from etrailer before and have only been disappointed once. But that was on the manufacturer of the product, not etrailer. I was able to return the item and was credited in a reasonable amount of time. I will continue to use etrailer. 344779

I am still very satisfied with all the products you mentioned.Thanks for checking!
Kenrod - 02/26/2018


- K71-358-00

These are great. I did not do the install myself. Like the abilty of being able to grease them and keep the wear down. Fit perfectly and the plastic ones even only had 1,000 miles on them showed lots of wear. This really are a must for your suspension. Factory ones are the bear minimum at least on my trailer. 319508

We have had these for a year now and they work as expected. So nice to be able to grease these.
mike - 11/25/2017


- K71-358-00

Good product, excellent service will use them again in the future 770038

- K71-358-00

This has been an awsome upgrade from the standard plastic bushing and quarter inch thick shackles. Installed super easy. As most may know, the original plastic bushings that come standard are essentially worthless. And the thin standard shackles cut through the bolts and elongate the holes in a very short time. With this kit, the bronze bushings, along with the wet bolts will extend the life of these components almost indefinitely. All this, together with the half inch thick shackles, insure the shackles remain perfectly vertical with no tendency to lean out of plumb due to the additional contact surface with the bolts. I don't anticipate ever having to change them. Just pump a little grease in the zerk fittings every 5,000 miles or so, as suggested in the instructions. If I had any criticism at all, it would be that these come with straight zerk fittings that make it difficult to get a grease gun on (even with the hose type) because of tight clearance with the tires. Easy fix though, I just replaced the originals to angled zerks. I've already put about 8,000 miles on these in the first year. One of the most cost effective upgrades I've ever done. 749747

- K71-358-00

I was surprised at how beefy these were compared to my original pieces. I believe these will surely outlast me. Easy install, all fit perfectly. Quick on ship and delivery. 708188

- K71-358-00

Great product. Installed on Grand Design 29RS with new leaf springs. Much stronger than what came on the RV. Highly recommend 707779

- K71-358-00

At no fault of etrailers, I received this with a key missing piece, After a phone call, the missing shackle link was sent directly from the manufacture. 429764

- K71-358-00

I used this kit while replacing springs. Much heavier hardware than what was replaced. Should be good for another 25 years! 363881

- K71-358-00

Lot better than I expected. The only issue I have with this is that Im installing this for single axle and I wish there was 2 extra bushings for the top bolt of the shackle side. 238588

- K71-358-00

Purchased many parts. Great prices and good delivery time. Would recommend to all and will use again when I need parts they sell. 227926


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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Written by:
Laura H
Installed by:
Cole B
Updated by:
Sarah W
Updated by:
Amanda M
Updated by:
Brian T

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