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

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

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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. Great Prices for the best trailer suspension parts from SuperSprings Intl. SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung part number SS33HR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (197)
  • Q & A (0)
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SuperSprings Intl Trailer Suspension Parts

  • Leaf Spring Enhancement System
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Single Axle
  • 5000 lbs
  • 6000 lbs
  • 7000 lbs
  • 8000 lbs
  • SuperSprings Intl
  • Jounce Springs

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


Features:

  • 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


Specs:

  • Application: 5,000-lb to 8,000-lb single, underslung axle - springs sit under axle
    • For tandem axle applications, use 2 kits
  • Fits 1-3/4" wide spring packs
  • 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: 7-7/16" - 8-5/8"
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee


TSS-106-47 Sumo Springs 5,000 lbs - 8,000 lbs GAWR Trailer Helper Springs w/ Bracket - Underslung

Item # SS33HR

Installation Details SS33HR Installation instructions



Customer Satisfaction Score:


Customer Reviews

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung - SS33HR

Average Customer Rating:  4.7 out of 5 stars   (197 Customer Reviews)

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

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See what our Experts say about this SuperSprings Intl Trailer Suspension Parts

  • Recommended SumoSprings For A 2016 Forest River Wildwood 28DBUD Travel Trailer
    Hey Lance, To determine the correct SumoSprings for your 2016 Forest River Wildwood 28DBUD we'll need to first see if your leaf springs sit above or below the axle and we'll need to know the axle capacity. If your springs sit above the axle then you have overslung suspension and if they sit below the axle you have an underslung suspension. For the capacity you likely have a 3,500-4,400lb axles but you can verify by looking at the axle for the a sticker that lists the capacity. I've separated...
    view full answer...
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  • Can I Use Helper Springs on My 2020 Grand Design Solitude Fifth Wheel with 2 Axles Rated at 7k?
    Hello Steve, Yes, you can most definitely add helper springs! This is a great way to improve your ride quality better while towing. I see that the 2020 Grand Design Solitude Fifth Wheel comes with 2 axles rated at 7k so you will want one of the following: If your leaf springs are located at the top of your axle you will want the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung # SS26MV. If your leaf springs are located under the axle...
    view full answer...
  • How to Reduce Ford F-250 Jiggling From Grand Design Travel Trailer
    There are a few different things you can do to help with this. It would also be helpful to know what kind of jiggling you're experiencing. Does it just feel bouncy and rough? Is it side to side motion? If your travel trailer weight is more than 50% of your trucks GVWR then it would be a good idea to use a weight distribution hitch which will level you out and reduce sway. If it is more like a rough ride then you could try an upgraded equalizer, shocks, or adding something like SumoSprings...
    view full answer...
  • Sidewinder Pin Box for 2022 Wildwood Heritage Glen 5th Wheel
    The ST200 turret for the # 5AS16K has been discontinued. You may be able to find it still but I wasn't able to when I ran a quick search. At this time, the only Sidewinder we offer that fits the 1621 is the # RP34FR. Also, you aren't hearing from Reese because they're owned by First Brands now. Ever since this change the wait times on the phone are extremely long and many of their parts are gone or on indefinite backorder. The # RP34FR will help with clearance but it won't do anything...
    view full answer...
  • Why Is It Not Recommended To Step Up to 8,000LB Leaf Springs Instead of 7,000LB Leaf Springs?
    We do not recommend moving from 7,000lb # e64SR to 8,000lb # DX74XR leaf springs as this creates a stiffer ride with more bounce. This causes more shock to transfer inside your RV which can cause damage to the trim and electronics. Instead I recommend adding the SumoSprings # SS26MV for overslung axles or # SS33HR for underslung axles. These help to absorb shock from transferring in your trailer as well as give you more support to reduce sag in the leaf springs. Also adding heavier leaf...
    view full answer...
  • Will The SumoSprings Trailer Helper Springs Fit A 2022 Jayco North Point 382FLRB 5th Wheel
    The SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS26MV could possibly be the correct kit for your 2022 Jayco North Point 382FLRB 5th wheel, you'll just need to verify the orientation of your leaf springs to the axles. The # SS26MV are designed for overslung axles, which means that the leaf springs will sit on top of the axle. If you have underslung axles (leaf springs below the axle) then you'll just need part # SS33HR instead. These kits are for a single axle only...
    view full answer...
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  • Solution to Help Keep Tires From Rubbing on 2019 Keystone Cougar on Rough Roads
    Hey Brian, thanks for reaching out! The measurements you have are similar to the 4-Leaf Double-Eye Spring for 4,400-lb Trailer Axles # DX95CR so it sounds like your leaf springs aren't flattening out as of yet. If you drive on some pretty rough roads with the trailer close to max GVWR then that could definitely be why you're seeing tire marks. I recommend checking out the SumoSprings Jounce Springs for trailers to help soften the bounce from those roads. You'll just need to choose the...
    view full answer...
  • Air Spring Suspension System For A 2021 Forest River Stealth 5th Wheel Toy Hauler
    Hey Charles, For air springs we currently only offer the Lippert Center Point by Trailair Air-Ride Suspension Upgrade # LC1565391. This system can help improve ride quality by reducing road shock and chucking. It does require standard hangers and the hangers must be spaced either 29 1/2” or 30 1/2” apart, otherwise you'll need to redo your suspension in order to complete the install. We also offer jounce springs that can help in the same way, just without the customization you'd get...
    view full answer...
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  • Recommended SumoSprings And Timbren Jounce Springs For A 2021 Grand Design Reflection 337RLS
    Hi Ryan, If your leaf springs sit on top of your axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS26MV. If your leaf springs sit below the axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS33HR. Timbren does offer a few different options for leaf spring suspensions but you won't be able to use both the SumoSprings and Timbrens because they both mount in the same spot. If your leaf springs sit on top...
    view full answer...
  • SumoSprings Trailer Helper Springs For Underslung Trailer Axles Availability
    For a trailer with underslung axles(leaf spring mounted below the axle) you will need the SumoSprings Trailer Helper Springs in either a 3,000-5,000LB Capacity # TSS-106-40 or 5,000-8,000LB Capacity # SS33HR. The weight capacity of the springs will need to match your single axle capacity. You will want a set for each of your axles if you have a tandem or triple axle trailer.
    view full answer...
  • Recommended Sumo Springs for a 2022 Grand Design Reflection 5th Wheel
    For your 2022 Grand Design Reflection has overslung axle which means your springs sit over your axle, then you can use the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS26MV. If you have underslung axles meaning your springs sit under your axles, then you'd need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS33HR instead. These springs will work with 5,000 to 8,000 lbs, tandem axles, and has a simple no drill install.
    view full answer...
  • Parts Needed to Add Brakes and Suspension Enhancement to 3,500 lb Trailer Axle
    We aren't able to help with an axle replacement as we don't have the dimension axle you need. But we can help with the axle you have now. To add brakes you just need to replace the hubs with hub/drums like the # AKHD-655-35-EZ-K and brake assemblies # AKEBRK-35-SA. This has the 6 bolt pattern you are wanting. Then to move the axles in relation to the leaf springs you'd just need the part # K71-384-00 and you'd be set. Then for suspension support you'd want the part # SS33HR and you'd be set.
    view full answer...
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  • Recommended Trailer SumoSprings For A 5th Wheel With 5,100lb Axles
    Hey Mike, Since you have 5,100lb axles you'll want to go with the SumoSprings Trailer Helper Springs - 5K to 8K # SS26MV as long as your leaf springs sit above your axles. If they sit below your axles you'll want part # SS33HR instead.
    view full answer...
  • Recommended SumoSprings for a Triple Axle Trailer
    Yes, they are if your axles are overslung and the springs sit on top of them. The SumoSprings Trailer Helper Springs for 5-8K Axles item # SS26MV will work with a triple axle set up. They do a great job of absorbing road shock while also working to increase stability by reducing side to side sway. If your axles are underslung meaning they sit above your leaf springs you will need item # SS33HR. Both of these springs are sold as a pair. You will need one kit per axle. I have linked an...
    view full answer...
  • Will SumoSprings Trailer Helper Springs Increase Space Between Frame and Axle
    The SumoSprings Trailer Helper Springs typically install compressed so they do tend to provide more space between the frame and axle in most cases but not by much and this is not really the goal of the system. If you don't have enough space between the frame and axle then this may be due to worn out leaf springs so I recommend checking this but I have attached the SumoSpring options below which are based on axle type and capacity. SumoSprings Trailer Helper Springs w/ Line Relocation Bracket...
    view full answer...
  • Can Different SumoSprings Trailer Helper Springs Be Used for Better Clearance
    The SumoSprings Trailer Helper Springs # SS33HR is designed for applications where the leaf springs are under the axle - if you only have 4-1/2" of spacing between the top of the leaf spring stack and your trailer frame then that leads me to believe your suspension is either old or overloaded as your axle is going to be really close to your trailer frame. This requires 7-7/16" - 8-5/8" of clearance between the top of the spring plate to the bottom of the trailer frame. The SumoSprings...
    view full answer...
  • SumoSpring Kit that Can Fit 2021 Forest River Stealth RQ2715
    There are two options for SumoSprings for your 2021 Forest River Stealth RQ2715 based on your axle setup. The part # SS26MV is for if you have an overslung axle setup (leaf spring over the axle) or the part # SS33HR for if you have an underslung axle setup.
    view full answer...
  • MORryde Suspension Kit, Shackle Straps & SumoSprings For 6k Axles w/ 35 Wheelbase
    I certainly don't blame you for wanting to get it right the first time, and the answer to each of your questions is yes, it will all work together, though there are a couple of things you'll want to be certain to verify. But first, for the equalizer upgrade and crossbeam, for your 35" wheelbase (which you measured correctly from center to center of your wheels) you do have the correct part for your 6k axles: - MORryde AllTrek 4000 Equalizers for Tandem Axle Trailers # MR29DR With that,...
    view full answer...
  • Recommended SumoSprings for a Tandem Axle Trailer
    No, you will want to go with the 5,000 lbs - 8,000 lbs SumoSprings Trailer Helper Springs w/ Line Relocation Bracket item # SS26MV assuming your axles are under your leaf springs. If they're above your leaf springs you'll need Item # SS33HR. SumoSprings use a system called progressive load control. The more weight you place on them the more they engage. This provides you with only the support you need when you need it. Since you are over 5,000 lbs you'll want to go with the higher rated...
    view full answer...
  • Trailer Suspension Enhancement For a Underslung Axle with 2" Wide Leaf Springs
    The SumoSprings Trailer Helper Springs # SS33HR are only designed to fit 1-3/4" wide leaf springs. You might consider the Timbren # T92MR which mounts under the U-Bolts and will work with your 2" wide springs.
    view full answer...
  • Roadmaster Comfort Ride Shock Absorbers or SumoSprings For Tandem Axle Trailer With 7k Axles
    The better option for improving the ride on your tandem axle 2018 Montana fifth wheel with 7,000 lb axles is the Roadmaster shock system, with the correct part being the following: - Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers # RM-2460 The SumoSprings Trailer Helper Springs # SS33HR (Underslung) and # SS26MV (Overslung) are solid, but just won't improve your trailer's ride as much as the Comfort Ride. The SumoSprings progressively compress, and gets more rigid with...
    view full answer...
  • Correct SumoSprings For 2021 Grand Design Solitude 380FL With Tandem 7000lb Axles
    I would be happy to help! Since your 2021 Grand Design Solitude 380FL has tandem 7000lb axles you will need either the SumoSprings Trailer Helper Springs # SS26MV if your trailer has overslung leaf springs (leaf springs on top of the axles) or the # SS33HR if your trailer has underslung leaf springs (leaf springs underneath the axles). For your trailer you will need two kits, one for each axle. I included a video review of the products mentioned for you to take a look at.
    view full answer...
  • Will the SumoSprings Trailer Helper Springs Stay In Contact With Frame of Trailer
    The SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS33HR are going to install onto your 2022 Grand Design compressed so they will have a little bit of space between the frame and the axle but this is normal.
    view full answer...
  • Which Timbrens and SumoSprings Fit the 2022 Grand Design Solitude 3540
    The correct Timbrens for your 2022 Grand Design 3540 are the part # T92MR that you referenced and the correct SumoSprings are the part # SS33HR.
    view full answer...


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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 Kathleen M
Updated by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee Manda E
Updated by:
Manda E
Employee Dustin K
Video Edited:
Dustin K
Employee Mike S
Written by:
Mike S
Employee Michael B
Installed by:
Michael B

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