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  1. Trailer Leaf Spring Suspension
  2. SuperSprings Intl
  3. Leaf Spring Enhancement System
  4. Springs
  5. 5000 lbs
  6. 6000 lbs
  7. 7000 lbs
  8. 8000 lbs
SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung

Item # SS26MV
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Our Price: $274.99
Trailer Leaf Spring Suspension
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Shipping Weight: 6 lbs
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Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride. Lowest Prices for the best trailer leaf spring suspension from SuperSprings Intl. SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung part number SS26MV can be ordered online at or call 1-800-496-5010 for expert service.
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  • Reviews (69)
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SuperSprings Intl Trailer Leaf Spring Suspension - SS26MV

  • Leaf Spring Enhancement System
  • Springs
  • 5000 lbs
  • 6000 lbs
  • 7000 lbs
  • 8000 lbs
  • Single Axle
  • Jounce Springs
  • SuperSprings Intl

Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.


  • Improves suspension, handling and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride
  • Allows the leaf spring ample movement while cushioning light loads
  • Becomes more rigid as more weight is added
    • Increases stability, providing great performance while hauling heavy loads
    • Raises trailer ride height
  • Works independently side-to-side
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
    • Works to eliminate trailer sway
  • Acts as shock absorbers, taking the brunt of bumps and rough roads
    • Reduces load on leaf spring assembly
    • Extends the life of your trailer's suspension
  • Designed to work with a suspension system that is in good working order
  • 2 Jounce-style springs, line relocation bracket, mounting brackets and hardware are included
    • Maintenance-free - no tubing to run or air pressure to monitor like with air springs
    • Simple, no-drill installation
  • Made in the USA


  • Application: 5,000-lb to 8,000-lb single, overslung axle - springs sit over axle
    • For tandem axle applications, use 2 kits
  • Capacity: 900 lbs at 50 percent compression
    • Do not exceed the trailer's weight-carrying capacity
  • Spring dimensions: 5" tall x 4" diameter
    • Compresses up to 65 percent of original height with full memory rebound
  • Required clearance between top of spring plate and bottom of trailer frame: 5-5/16" - 6-1/2"
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee

Note: Does not work with spring plates wider than 4-1/4".

TSS-107-47 Sumo Springs 5,000 lbs - 8,000 lbs GAWR Trailer Helper Springs w/ Bracket - Overslung

Installation Details SS26MV Installation instructions

Customer Reviews

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung - SS26MV

Average Customer Rating:  4.7 out of 5 stars   (69 Customer Reviews)

Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.


So far so good. Easy install. Used trailer jacks to give me the 1/2-1” of lift required to install these. Definitely feel the difference in stability/lean when going around corners and hitting bumps. Will be putting a few thousand miles on this summer and these will provide some peace of mind knowing the suspension system isn’t taking as bad of a beating. A little pricey for rubber springs especially since I need four, but sometimes peace of mind comes at a price.


So far so good. Sumo springs have reduced the movement of items in the camper. No more getting ready to catch items when you open a cupboard.


These springs were installed very easily.
make a big difference in pulling the 40' 5th wheel down a bumpy road. There is no more bouncy bouncy when a rough road is encountered. The RV after hitting the rough road does not bounce like it used to but instead, you can see these springs dampen the impact.
These springs are a great purchase.


I have Sumo Springs on my F450 which work well.
Now I purchased them for our Riverstone38RE fifth wheel.
Easy install can’t wait to see how they work.


The Sumo Springs Trailer Helper have made a noticeable improvement in the ride of my trailer while being towed. Installation can be done with basic tools by one person.


Easy install. Notice a difference right away on rough roads and when making sharp turns the trailer does not sway as much as before.


installed on 5th wheel camper took 1st trip last week much smoother ride and also took the bounce out of camper when hitting bumps


While I have not had the opportunity to pull my camper with the sumo springs installed, they appear to be well constructed and the installation was trouble free.


I think they will work well. I had sumo springs on my 1500 Ram and they were great


We broke a set of leaf springs.
something to ease the strain of potholes, etc.
They have worked good so far.
They have lessened the terrible bouncing on most roads.


I have ordered a couple items from etrailer and always have a good experience. This item was packaged properly and easy to install. The instructions were easy to follow and there was extra hardware in case it was needed. I haven’t towed it with them installed yet, but I feel confident they will work as advertised.


Great product! Easy install took under an hour to accomplish.


Shocks were easy to install. Give added support to trailer


The sumo trailer springs are defective.

Oh no! It is unusual to hear that the springs are defective. I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 09/27/2022


The install was straight forward. After about 4,000 miles I noticed one was loose. So now I check them regularly. My coach has decreased chucking and less sway in cross winds.


Installed on a 2021 Grand Design 31MB. Very easy to install, took about 30 minutes. Takes out all the left to right rocking, and feels very smooth, even on Louisiana roads


Very easy install and work great


These spring's helped to stabilize my camper when crossing bridges and when being passed by large trucks.


They preform as advertised


These suspension aids are a breeze to install and set up! The most difficult part is jacking up your trailer. If you have a leveling system you can lift one side enough to easily get these installed without lifting the tires off the ground. You could also use blocking or a Trailer Aid too for tandem axle trailers. Looking forward to putting them through their paces on a trip this week to see how much of a difference they make. Expectation is that things inside our fifth wheel won't move around as much and whaling will be reduced. I have not replaced the factory equalizer yet, so this will be a good test.


I placed order for 2 sets of Item #SS26MV and one box the suumo springs was 6inchs tall the other box was 4inch tall suumo springs so not sure what happened but i got 2 diferant types of sumo sprins. Not very happy when i called to check on the order before they arrived i got a strange felling somrthing was not wright by the way they were talking about the items. Very disappionted.

Customer Service will reach out to you.
-- Etrailer Expert Sierra K - 12/13/2021


Easy install, gives nice added support and improves sway.


Great price


Did not last 170 miles before the first one broke off.


I really thk Mary she my order out quickly so while Rv was getting repaired they were able to fix my springs and everything at once. Before we leave on are trip

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee Manda E
Updated by:
Manda E
Employee Mike S
Written by:
Mike S

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