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SumoSprings Solo Custom Helper Springs - Rear Axle
Part Number: SSR-302-54
In Stock
$336.99
2021 Land Rover Range Rover
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- All Info
- Reviews (2551)
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SuperSprings Intl Vehicle Suspension - SSR-302-54
Highlights
- Custom Fit for Your Vehicle: Mounts to existing attachment points
- 2,800-lb Load Support: Levels your truck under heavy weight so steering and braking stay consistent.
- No Upkeep Needed: Maintenance-free springs mean no air lines, compressors, or pressure checks.
- Smoother Ride Over Bumps: Cushions shocks and road vibration for steadier towing and hauling.
- Handles Off-Center Loads: Each spring works independently to reduce body roll in turns.
- Simple No-Drill Install: Bolts in place of factory bump stops using basic tools for quick setup.
Features to know about
Stay Level and Confident Under Load: 2,800-lb Rear Suspension Support
Towing or hauling heavy gear can make the rear end sag and throw off your handling. These SumoSprings Solo helper springs add up to 2,800 lbs of support at 50-percent compression so your ride stays level and controlled. They help your factory suspension bear the load, keeping steering and braking steady and eliminating that droopy stance when you’re hooked up or loaded down.
Smooth Out the Rough Spots: Progressive Load Control
When the road gets bumpy, these microcellular urethane springs cushion the impact so your ride doesn’t feel harsh. They compress easily with lighter loads for a softer ride, then stiffen as the weight increases—up to 80 percent compression—to give the support you need without bottoming out. You get smooth engagement when lightly loaded and solid control when the truck’s working hard.
Stay Steady in Crosswinds and Turns: Independent Spring Action
Each SumoSpring works on its own side, helping to even out off-center loads and cut down on body roll. When you hit a curve or get blasted by a crosswind, this independent action keeps both sides stable so your truck feels planted through turns and uneven ground.
No Upkeep or Hassle: Maintenance-Free, No-Drill Design
Forget air lines, fittings, or pressure checks—these springs are completely maintenance-free. The closed-cell urethane resists oils, road salts, and UV damage while performing in temperatures from -25 F to 200 F. They mount right in place of the factory bump stops with no drilling required, so installation is simple and clean without extra parts to adjust later.
Specs
Weight and Capacity
- Weight capacity (at 50-percent compression): 2,800 lbs
Warranty
- Limited lifetime warranty
- 30-Day satisfaction guarantee
SSR-302-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks
This Product Fits The Following Vehicles
- 2010 - 2013 Ram 2500 2 Wheel Drive
- 2010 - 2013 Ram 2500 4 Wheel Drive
- 2010 - 2013 Ram 3500 Cab and Chassis - 2 Wheel Drive
- 2010 - 2013 Ram 3500 Cab and Chassis - 4 Wheel Drive
- 2010 - 2013 Ram 3500 Pickup - 2 Wheel Drive
- 2010 - 2013 Ram 3500 Pickup - 4 Wheel Drive
- 2010 - 2014 Ram 4500 2 Wheel Drive
- 2010 - 2014 Ram 4500 4 Wheel Drive
- 2010 - 2014 Ram 5500 2 Wheel Drive
- 2010 - 2014 Ram 5500 4 Wheel Drive
- 2008 - 2009 Sterling Bullet
- 2003 - 2013 Dodge Ram Pickup 2500
- 2008 - 2013 Dodge Ram Pickup 3500 - Cab and Chassis
- 2003 - 2013 Dodge Ram Pickup 3500 - Pickup
- 2008 - 2014 Dodge Ram Pickup 4500 - Cab and Chassis
- 2008 - 2014 Dodge Ram Pickup 5500 - Cab and Chassis
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
- Wrong item was ordered
Ratings & Reviews
4.7
2551 reviews
by:
Billorgan
10/16/2022
2012
Ram
2500
Absolutely a terrible product, I installed the SumoSpring into my truck and pulled my work trailer and the ride is terrible, The suspension hits hard on the Sumospring and is a unpleasant ride. Hopefully etrailer will refund my money..
by:
Billorgan
11/03/2022
It's okay, How ever I bought the Sumospring kit from this company, come to find out etrailer does not back up anything they sell, I was pushed off to the manufacturer of the product.
Jenny N.
11/5/2022
We cover the warranties on the majority of the products that we carry. There are manufacturers who prefer to handle the warranties directly with the end purchaser of the products. They are able to provide a faster solution this way.
by:
Darryl
09/29/2022
Pulling an unloaded trailer causes the truck to shake like the tires are out of balance at 45mph to 50mph. 20ft 14GVWR 3000 lbs. Must be just enough weight to engage springs.
Put a load on the trailer and the springs work well. No rear end squat. Not harsh ride.
Put a load on the trailer and the springs work well. No rear end squat. Not harsh ride.
by:
Don Foley
06/01/2015
2014
Ram
5500
I've installed at least 4 sets of these springs on 4 different trucks and they really do a nice job carrying a load and the service from etrailer can't be beat
by:
Ryan
06/24/2025
Took less than 30 minutes to install!
by:
Dennis
07/16/2021
2011
Dodge
Ram Pickup
All the folks at etrailer were very helpful. Thanks
by:
Marty
08/19/2021
2010
Ram
3500
Have not had a chance to try them yet. Camper weighs 3500#. We will see on our next trip.
by:
Norman
09/12/2022
Easy to install
by:
Tim
06/03/2021
by:
Terry
04/04/2026
by:
Michael
05/09/2026
2025 Promaster 2500 159” wheelbase. Backed the van on couple 2” X 6 “ easier sliding under. Sprayed PB Blaster on top of bumper spring, using a 16” Channel Lock, easy off with the old. At that time I jacked the rear end to allow clearance. One side at a time. Took longer for set up then the job. I used the long bolt with two spacers. Have not drove yet, though looking for great results.
Lazer S.
5/13/2026
Glad to hear the install wasn't too bad, Michael! Definitely let us know how the ride is once you take it out for a drive! What are you using your Van for? The tires look pretty beefy.
by:
Justin
08/29/2026
2020
Jeep
Gladiator
This only pertains to the order, shipping speed, and install as I have not put a heavy load on these sumo Springs yet but I feel like that's a foregone conclusion based off the reviews already. The ordering process, the shipping, and the installation was unbelievably easy. I kept rereading the instructions thinking this can't be right because it was so simple. I looked at the YouTube video and realized it is that simple! So happy with the ordering process, the quality of the initial product I opened, and how simple it was to put on the jeep.
Claire H.
9/1/2026
That is the beauty of SumoSprings! Super easy to install and once they're on you can forget they're there! Are you planning on towing something with your Jeep that you want extra support for?
Claire H.
9/2/2026
@Justin That sounds like a good plan! These SumoSprings plus the sway bar should be more than enough to handle the weight of your truck bed camper.
by:
Randall
08/11/2026
2013
Jeep
Wrangler Unlimited
I put these on a 2013 Jeep JK (not lifted) that tows a 3000 lb trailer in rough terrain; Total game changer.
These replaced the anemic factory stops (which had completely disintegrated) and make it impossible to 'bottom out' on the dips and holes that use to beat up the suspension. I got nearly all of my vertical travel back and the vehicle now sits almost level under high tongue load.
They go on pretty easy. I suggest sliding in one side, and then using a wooden dowel and hammer to pop the other side in the stock receiver cup.
Highly recommended. These are a MUST if you are towing a trailer (with a medium sized SUV) of any significant weight or if you just want to be able to bounce hard without bottoming out your suspension. I am likely going to get the front suspension version now as well.
Wish I knew these existed sooner.
These replaced the anemic factory stops (which had completely disintegrated) and make it impossible to 'bottom out' on the dips and holes that use to beat up the suspension. I got nearly all of my vertical travel back and the vehicle now sits almost level under high tongue load.
They go on pretty easy. I suggest sliding in one side, and then using a wooden dowel and hammer to pop the other side in the stock receiver cup.
Highly recommended. These are a MUST if you are towing a trailer (with a medium sized SUV) of any significant weight or if you just want to be able to bounce hard without bottoming out your suspension. I am likely going to get the front suspension version now as well.
Wish I knew these existed sooner.
Heather A.
8/12/2026
Wow thank you for the glowing review Randall. It sounds like once you got them installed they are working out great. That sunset is gorgeous, where were you in this photo?
by:
Chad
05/18/2026
2022
Ford
F-150
Love them! The truck barely even squatted, had two dirt bikes, and a generator in the bed as well! It handles the bumps and sway great
Gwendolyn Y.
5/20/2026
Looks like you were about to head off somewhere fun, Chad!
by:
Morgan
07/14/2026
Put these on a Jeep Gladiator to haul a motorcycle to Sturgis. Kept everything level, good ride and stability. Highly recommend.
by:
Warren
10/27/2026
2016
Toyota
Tundra
It arrived pretty promptly about 30 minutes later I had him installed. It took me longer to find the proper Tools. Never had to remove the tires or wheels the only time I had to jack it up was to put the helper springs and screw them down very easily install
by:
Paul Hornaday
02/20/2026
2000
Nissan
Leaf
Great product! Bought these for my 2000 7.3 f250. Didn't want something that is constantly active like ras or hellwig since my leaf springs are new and rated for 4k pounds. Installed these in 1 hr super simple only hard part was the factory bump stop on driver side was a pain. Didn't install the puck they give due to height of truck and I knew more or less at what point I wanted them engaging. I haul cattle to shows/ auctions or between pastures with my 24ft big bend and these things actually provided a smoother ride in my truck loaded then unloaded.they do a great job with the added support and are better than an overload spring with handling sway and providing a smooth ride loaded. Just wish I could use the 3k pound rated ones on this truck and my dually but doesn't fit if you have a gooseneck sadly so will probably have to go with timbs on the drw. Over all great product can't speak to longevity but solid for the time being. And customer service with this company is excellent if you have a question or problem they're on top of it...hope they pay them as well as the reputation they're building for them.
by:
Jeff B
04/22/2026
Very easy installation. The improvement in handling is phenomenal.
Gwendolyn Y.
4/23/2026
Thanks for the awesome feedback, Jeff! Love hearing that the install was a breeze and that you noticed such a big difference in handling, that’s exactly what you want after the upgrade. Really appreciate you sharing the photos too, it’s always fun to see the comparison.
by:
Christopher
01/06/2026
2024
Chevrolet
Silverado 1500
I put a set of 47s on my Silverado 1500 and towed my dump trailer that weighed 6000 pounds the way I had it loaded for 50 miles on all kinds of roads and it worked well. I didn’t use the spacers and the truck still rides like it did before the install.
Gwendolyn Y.
1/8/2026
Glad the Sumos are helping make your loads easier to tow!
by:
Michael Batts
02/13/2026
Jeep Gladiator Mojave - swapped out the rear stock bump stops with these. High quality parts. Just jack up the truck enough to give you room to work with and put in your jack stands, no need to remove the wheels. I look forward to seeing how they do with towing! Hopefully I can update my review here afterwards. Check out the gap difference in the pictures. Should touch sooner during normal drive conditions and hopefully help reduce some trailer squat and help towing to be smoother.
by:
Richard
02/10/2025
Opted for the Blue 1000lb Sumo's w/spacer over the 1500lb Black ones. 1500 Silverado Max Tow & reduces squatting by 2" on a 1000lb+ tongue weight. Ride is still good, but you can feel the Sumo's engage over large dips or bumps which is not an issue for me.
Richard
2/12/2026
No issues. Towed a 27 Airstream around 4k miles & its all good.
Lazer S.
2/12/2026
@Richard Nice! Glad you are still happy with them! Was that all one trip, or multiple different trips?
by:
Mike
07/21/2024
I got the springs installed last week and wanted to have a drive time before I wrote the review.
The height of the springs are perfect for my 2016 Tacoma, They keep the truck stable and nearly eliminate the body roll I had before installing them. I am heading to the mountains in a couple weeks, so I will update the review when I get back. That way I will know for sure the body roll is gone and the truck is stable on the winding mountain roads.
The springs installed in no time at all and since I had the rear end apart, I decided to add the leveling blocks at the same time, to keep the truck from squatting with the gear I haul around with me.
The guys at etrailer are great. And while I did not call them to discuss this item, they have been very helpful in the past with all my questions.
Below are pictures of before, a couple comparisons and after. Sorry if they come out sideways.
These Sumo Springs were a great addition to my Tacoma and well worth the money, IMHO.
The height of the springs are perfect for my 2016 Tacoma, They keep the truck stable and nearly eliminate the body roll I had before installing them. I am heading to the mountains in a couple weeks, so I will update the review when I get back. That way I will know for sure the body roll is gone and the truck is stable on the winding mountain roads.
The springs installed in no time at all and since I had the rear end apart, I decided to add the leveling blocks at the same time, to keep the truck from squatting with the gear I haul around with me.
The guys at etrailer are great. And while I did not call them to discuss this item, they have been very helpful in the past with all my questions.
Below are pictures of before, a couple comparisons and after. Sorry if they come out sideways.
These Sumo Springs were a great addition to my Tacoma and well worth the money, IMHO.
Mike
7/31/2025
The springs are working exactly as expect. I have need up to the mountains numerous times and to Monerary to the Sea Otter bike fest. They have reduced the body roll and helped keep the truck stable on the mountain roads or when loaded down for camping. Im very pleased I added these Sumo Springs to my Tacoma.
Jon G.
7/31/2025
@Mike We LOVE to hear reports like this!
I've never been to the Sea Otter bike fest, but I looked it up online and it looks pretty cool! How many times have you gone to it?
by:
Allan
10/25/2026
2016
Chevrolet
Silverado 1500
Have Nissan NV 1500 (transit van).Loads and trailers were the problem-along with the constant "slouch" look-with no really heavy load on it. Hated that!
These used with "add-on leaf springs" made a world of difference.
Bumps being felt, are there, but nothing like before. These two things along with new shocks (all for back),has helped out so much!
So, the bumps have almost faded to "nothingness". Now granted, I have not hit a massive pothole, yet. I try to dodge those anyhow!
Components work great together!
These used with "add-on leaf springs" made a world of difference.
Bumps being felt, are there, but nothing like before. These two things along with new shocks (all for back),has helped out so much!
So, the bumps have almost faded to "nothingness". Now granted, I have not hit a massive pothole, yet. I try to dodge those anyhow!
Components work great together!
by:
Billy
04/23/2026
Got them installed no issues the reason for 4 stars is one side touches top of axle the other side does not no one could tell me if this was right or wrong also haven't pulled 5th wheel yet to feel the ride or handling so we will see thanks
by:
Cory
09/12/2025
2024
Ford
F-250 Super Duty
Definitely helps with squat on '24 F250 from boat trailer tongue weight. These do come with a plate to avoid uneven contact or wear.
I mounted using all spacers , stock is same unless speed bumps or large dips, u feel the stiffness/contact of sumo as expected. May take one spacer out .
Super easy to install , better than leaking bags.
Time will tell how they last
I mounted using all spacers , stock is same unless speed bumps or large dips, u feel the stiffness/contact of sumo as expected. May take one spacer out .
Super easy to install , better than leaking bags.
Time will tell how they last
Lazer S.
9/16/2025
Glad to hear they are helping, Cory! If you are feeling them going over speed bumps, I think taking one of the spacers out is a good idea. Especially if that is happening when you are unloaded. Speaking of which, what are you towing?
Lazer S.
9/23/2025
@CoryS Nice! I've been on a couple center console boats that moved faster than they probably should have! Grew up on and around boats in San Diego. There were some very "iffy" things done to make them faster. : P
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- How Long is the SuperSprings SSR-306-47 for 2008 Ram 1500There are a lot of different models of the SuperSprings Custom Solo Helper Springs that are available for different Ram pickups, but assuming you've got a 1500 the correct SuperSpring Custom Solo Helper Spring is part # SSR-306-47. That particular spring is 7-1/4" including bracket and is designed to replace your factory bump stop on the rear axle. If you were looking for a different part number, just let me know and I can give you the dimension you're seeking.
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view full answer... - How To Prevent Sagging On My 2007 Dodge Ram 2500 When Pulling 27ft Camper With 800lb Tongue Weight For your application with adding the sway bar on your 2007 Dodge Ram 2500, a trailer with 800lb tongue weight but still wanting quality ride when unloaded I recommend SumoSprings Solo Custom Helper Springs - Rear Axle Item # SSR-302-54. These springs are a standard duty spring with a 2800lb capacity. 700lb of tongue weight with the standard duty installed, the back of the vehicle is going to sag about 1/2 inch. Adding another 100lbs it may sag approximately 3/4 of an inch to 1 inch. These...
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view full answer... - Will SumoSprings Help My 2012 Dodge Ram 3500 Dually That Already Has 4k SuperSpringsWith you already having the 4000 pound SuperSprings, and the Hellwig antisway bar the SumoSprings # SSR-302-54 would be a great addition to help with the little bit of squat you have left. They have a capacity of up to 2,800 pounds and they're maintenance-free springs. They have a simple, no drill installation, and are made in the USA. Follow the link below for an installation video on a 2011 Ram 2500.
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view full answer... - Rear Helper Springs for a 2015 Ram 3500 Mega CabYes, the SumoSprings # SSR-302-54 will replace the factory bump stops on your 2015 Ram 3500. They will bolt in place of them. Once installed the springs may make contact with the axle when unloaded but will definitely engage when weight is put in the bed or if the suspension compressive enough such as when hitting a bump. The SumoSprings are about 3 inches taller than the factory bump stops. If you were to measure the space between the bump stop and where it would touch the axle (with...
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Katrina B.
10/21/2022
I am sorry to hear that this item is not working properly for you. I see that this manufacturer prefers to handle all of their own warranties. I have sent your information over to the manufacturer for them to get in touch with you about a possible warranty.