SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung
(165 reviews)
Price: $299.99
In Stock
SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung
Item # SS33HR
Retail:$342.95
Our Price: $299.99
You Save: $42.96
In Stock
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- All Info
- Reviews (165)
- Q & A (0)
- Photos
- Used (1)
SuperSprings Intl Trailer Leaf Spring Suspension - SS33HR
- Leaf Spring Enhancement System
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- 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.
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
Installation Details
Customer Satisfaction Score:
85% were satisfied with this product
15% of customers were not satisfied
- Wrong item was ordered
- etrailer mistake
- Product did not meet expectations
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 (165 Customer Reviews)
Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.by: George 06/12/2023
As advertised Sumo springs dampen rough road ride a lot less side to side motion also
by: Rich 04/04/2023
Working great. Settled the bounce down and boosted the trailer capacity. It also gave me a piece of mind of what would happen if I broke another spring like I did before I bought these. Functional and added safety.
by: Donna 08/18/2023
We’re all of their trailer need you just need to contact the Trailer. They stand behind their word 100%.
by: Willis09/04/2021
I got 2 sets of these 5K-8k Sumo springs. I have Sumo springs on my tow vehicle and they are great. items states they fit any axle but would not fit my Dexter 8K axles. These are made for 1 3/4 inch springs and mine are 2 inch. called Super spring and they do not have a bracket for 2 inch springs. I was able to make them work by have a machine shop modify the brackets to fit 2 inch springs. they seem to be doing a good job on my trailer.
by: Jim03/10/2022
Pretty easy install on my tandem axel fifth wheel. I did have to add four additional 1" spacers, one for each spring, to get the additional 1/2" lift desired. To do this I had to buy longer M8X80 mm bolts. I haven't towed it yet but I expect them to perform as promised.
by: James 08/16/2022
The single best upgrade for our toy hauler and the overall hauling experience. Buy these and install them asap!
by: Paul 09/23/2022
Exactly as advertised, easy install, works great.
by: Michael 03/24/2023
by: Timothy 09/03/2022
by: Kevin 10/13/2023
by: Sandra 05/05/2023
by: Eric 11/24/2021
by: John 11/20/2022
We have a Grand Design Reflection 5th wheel with the refridgerator on the rear wall, and we kept having issues with the fridge doors coming open during bumpy travel, so we installed the Sumo Springs based on a number of other reviews that indicated it would restrict the trailers bouncing. Total success, we have not had the doors open since the install, and generally feel less bouncing as we travel. The trailer also has less bounce when stationary, an added benefit.
by: Rod05/09/2023
My toy hauler when loaded maxes out the 2 8000# axels. These Sumo Springs stop the over travel of the suspension and stops the spring sag that these trailers are noted for. The ride is more under control and there is less effect on the contents.
by: Justin (Five for the Journey on YouTube)04/09/2023
We purchased these SumoSprings for our 2019 Heartland Fuel 250 knowing that they would not fit our leaf spring top plates, but I knew I could modify the mounting bracket to accommodate our RV. For anyone who has Dexter axles with shocks, you most likely have a 5-1/2” wide leaf spring top plate. If you are handy and have an acetylene torch or map gas you can simply heat and bend the inside bracket, drill a 1/2” hole and through bolt it to an existing hole in the top plate. I actually think this is a more secure install. Overall, it would be nice if there was an exact fit for our Rv, but it was an easy fix. Great product.
by: Gary12/15/2022
etrailer provides quality products you can trust. Sumo springs made a big difference in the ride quality of my fifth wheel going down the road. It helped with chucking and takes some of the roughness out of the roads. Items in the cupboards are still a mess when we get to our destination, but less of a mess. Highly recommend!!
by: Silva01/22/2023
Installed on 2022 Jayco NorthPoint 310RLTS. Took them on their maiden voyage east on 138, south on 15 and 215 into Santee Lakes, Ca. Appears they have mitigated some of the rebound caused by springs, however don't expect it to eliminate all. There was still at times significant "bouncing" when transitioning bridge gaps or wonderful LA / San Bernardino Freeways.
Having had Timbren springs on my last truck and really enjoying the support, wondering now if I should have gone with them?
Bottom line, they WORK, just less than I would of expected. But then again, my expectations might have been too high.
by: Dale 09/07/2023
If you own a camper, and you are planning on towing it on the crappy roads in America, you need these springs to cushion the ride and protect your investment. Install is fairly simple and straight forward. Just take your time and don't rush it.
by: Cenvalleysteel11/04/2022
Very easy to install. The rough and uneven road and ride on our fifth wheel is vastly improved.
by: Christopher09/07/2023
I bought these believing I needed them for the leaf springs. I had set them aside so I could return them. Naturally, I forgot about them and a year later I contact the company and they tell me they won’t return them and suggest I sell them on social media. I have bought two leaf spring kits and due to my recent interactions I will never buy another set or recommend them to anyone. Very disappointed.
by: Dan 11/14/2023
A must have for additional support for the leaf springs and makes the towing experience much smoother
by: Lynn10/19/2023
The springs do work I'm not sure how much they help. I take a trip across the USA every year. (10K miles) The roads are rough. I might be expecting too much, still have cabinet doors come open. I do feel they support the suspension.
by: Timothy 10/20/2023
Installation was very simple. I didn't need to relocate a gas line which made the job even easier. It took me longer to crawl under the trailer than it took to install them. I have not towed yet, but I'm confident they will make a huge improvement on the trip from Michigan to Texas.
by: John03/01/2023
Very easy to install plan taking big trip in a few months can’t wait to see how they handle. Update to follow.
by: David 08/15/2023
I love my SumoSprings they work and they were easy to put on
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Show More Reviews
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Do you have a question about this Trailer Leaf Spring Suspension?
Used Items Available
Condition: Like New
Notes: May have damaged packaging or minor cosmetic blemishes.
Info for this part was:
Expert Research:
Mike L
Expert Research:
Jameson C
Edited by:
Lindsey S
Updated by:
Kathleen M
Updated by:
Wilson B
Updated by:
Noah M
Updated by:
Manda E
Video Edited:
Dustin K
Written by:
Mike S
Installed by:
Michael B
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Sierra K.
9/21/2021
It sounds like you may need longer ubolts. The ubolts labeled “H” in the instructions.