To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Ever find your truck's front end dipping under the weight of heavy loads like snowplows or winches? These Coil SumoSprings provide the perfect solution by progressively adjusting to the weight, meaning the more you load, the stiffer they become. This feature gives you improved load support, making your ride smoother, reducing body roll, and keeping your truck level even when hauling or towing heavy front loads.
Living in colder climates can wreak havoc on your truck's suspension. The durable microcellular polyurethane foam used in these SumoSprings is designed to withstand extreme temperatures, remaining effective all the way down to -22 degrees Fahrenheit. This quality ensures that no matter the weather, your suspension enhancement is reliable, providing a consistent ride quality without the worry of weather-related damage.
When you're always on the go, spending hours installing suspension products isn't ideal. These helper springs fit seamlessly between each coil of your front suspension, requiring no ongoing maintenance. This ease of use allows you to focus on your travels, knowing your suspension is quietly doing its job in the background.
If you're spending long hours on the road, especially with heavy loads, driver fatigue can be a real problem. These insert springs absorb shock, providing a more comfortable ride and helping to prevent driver fatigue on those longer journeys. Whether clearing snow or driving cross-country, you’ll experience a noticeable difference in ride comfort and support.
Road salt, oil, and UV rays can all cause damage to your truck's suspension over time. These coil springs are engineered to resist such damage, ensuring longevity and continued performance. You get peace of mind knowing that your investment in a comfortable and stable ride is protected against the wear and tear of daily driving conditions.
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
Ratings & Reviews
2009 GMC Sierra CC 2WD
It does take some time and sweat equity to install. I think some may have a harder time if both tires are not off the ground at once. Lifting only one side, the front sway bar may transfer some of that compression to the tire in the air possibly causing that spring to have less room between coils.
They work as advertised however may need not be for everyone. I like how I can take corners at higher speed as if it is on rails (I also have the rear sumos). No nosedive during emergency stops. Not too intrusive when driving on smooth pavement but over rough or broken road can be tiresome over time. I guess they took a little more "spring" out then I was hoping for.
I am considering taking them out and installing a larger front sway bar.
These seem to make a big difference on the sagging front end of my '08 Ram 1500. Tip: Use LOTS of dish soap and install on a warm, sunny day. My first attempt at installation was on a cold day and the springs were inflexible and would NOT go on. They went on easily when warm.
Thank you for the follow up. This product was probably designed for an older generation of coil springs. So, it did not fit my vehicule and was a complete waiste of money. Sorry about the news. Regards.
They aren’t thick enough to make a difference between coils when loaded.
I did not remove the front tire as I add more than enough room to slide them in. Quick and easy install. The front did not need to be trimmed.
Install was a breeze, and the ride is a lot better, can’t wait to put some weight in it
Easy to install and greatly increases the stability and ride of our Ram 3500 van
Unbelievably easy to install with instant positive feedback. I tow a 9,000 travel trailer using a weight distribution hitch along with added Sumo Springs rear suspension upgrade. Feels like I'm towing with a 1 ton dually.
I cannot recommend these products enough!
Actually used these on the rear coil overs on our 2008 expedition for a little extra help while pulling our camper. Definitely helped level things out. Simple and great product.
I put these on all four wheels of my small SUV. Previously when it was loaded up for Overlanding and camping trips if I hit a bump or dip,it would bottom out on the shocks. Now they perform really well in those situations. When the car is not loaded up with gear, it performs as it would without the sumo springs. The ride is not stiff. Occasionally, I hear squeaking of the plastic material when the wheels articulate low speed on steep angles as it rubs against the shocks. After a year of use, I am glad I installed these overload devices. I think they have greatly extended the load range of my vehicle and the durability of the shock absorbers.
I was very excited about these for my 4x4 2015 Nissan Frontier. I am not completely displeased with them because they do make a mild difference over bumps, but they aren't worth over 100 bucks no way, the fact that I had to CUT THEM to fit due to them being too long made me feel like the company does not due their research when manufacturing them. It was so long that it lapped the beginning on it, so in order to have them installed as shown on the instructions I had to cut nearly 3 inches off... Which meant I had to comely install them, mark then uninstall, cut to fit, then install again. For an item to cost this much I expected better build quality.
Bang for buck it's not worth it, it's overpriced and I wouldn't recommend them for that cost.
Install went fairly easy once I figured out the best spot to put the jack to lift the van. Really helped to have an oil filter wrench to get the old springs off the back. Took it out for a drive after an much better cornering and much less effect from wind and 18-wheelers. This was on a fairly windy day. No big difference in softness of the ride.
10 minute install significant improveme nt
As advertised! Our van should have come from the factory with these!
I am working with a 2025 Pleasure Way nature 2.2 class B on the Ford Transit chasis. We were experiencing a very rough ride in our RV. Pleasure Way had already installed the SuperSprings helper springs on the back leaf springs. This RV is rated for 11,000 pounds gross weight. We are currently almost 900 pounds below that weight fully loaded. This is probably as heavy as we ever will be loaded and about as light as we will ever weigh.l
I installed the SSR-121-47 SuperSprings in the back to reduce the jumping and slamming we were experiencing while driving and hitting rough spots, potholes and open joints at bridge junctions on the highway. I had to remove the back dually wheels to have adequate access to remove the original bump stops and install these springs.
Next, I installed the Coil SumoSprings CSS-1195 on the front coil springs per instructions. These were easy to install and we finished installing these coil helper springs in about 25 minutes including the setup time to gather the jacks, jack stands, soapy water, etc..
RESULTS:
My wife and I then took a ride to test the results and Oh My!!! What a difference. The jumping and hard slamming in the back suspension smoothed out and became as docile as our Lexus RX 350 car. I took my brother and nephew on a ride before I ordered the SuperSprings for the front and back and my nephew who sat in the back of my RV said the suspension action almost tossed him off the sofa when hitting small defects in the road.
The van tracked so much better. It had been moving left to right even when there was no wind. It was flat in corners and the steering felt firm, not soft and mushy like before. It was so back that the van would drift to the third land when I changed lanes. My wife is so happy. The cab is so much quieter and it is easier for us to have a conversation now. Before, we had to be facing one another and shout to each other in order to be heard.
I had considered upgrading the front struts and back shocks and adding a steering stabilizer to correct the wandering all over the road. The van was hard to handle in speeds above 60 MPH from new to now, 3,700 miles on the van.
We are very happy. We installed upgraded bump stops on our 2019 Sprinter chasis for our 2021 Dynamax Isata 3 24FW and got similar results.
I strongly recommend these products for the Ford Transit 350 HD to provide a more comfortable, controlled ride and reduce white knuckle driving!
Went on a little hard but once started not to bad. Haven't tried yet to tow with them.
I ordered these for my RAM Promaster 3500 because I had heard from fellow owners that they are a worthwhile addition, for increased stability on the road. The instructions are good, and they weren’t too hard to install myself. They are kind of expensive for a couple of rings of dense foam/plastic, but I guess they must be petty heavy duty. I look forward to my next trip to see how they perform.
Total upgrade in ride and stability. 100% best upgrade to promaster
Bought these for the front of my 2019 Honda Ridgeline. They did not fit at all, too small. However they went on the back ok so that’s where they are. Ordered another pair for the front. Fit them with another on line service. Hope they fit.
Installed these sumo spring spacers in our 2023 Promaster/ Roadtrek conversion van three weeks ago and just returned from a two week 2000 mile road trip with my wife. These spring spacers made an unbelievable improvement in general handling and highway speed handling around semi's, on and off ramps stability, cornering at intersections and dealing with crosswind conditions on the road. They were less and a $200 investment and they were great decision. While they were a little hard to insert into the springs, after watching several installation videos and soaping them up good after lifting each corner of the van, I was able to get them inserted in the springs and adjust them on the coil to where I wanted them at mid coil height. Great product!
Purchased these to take a little load of my strut assembly because of a heavy winch bumper and winch. Product works well....
These reduced nosedive hard braking when loaded significantly as well as leveling the front end when towing on my 4runner
These were difficult to install. Good thing I have strong hands. I do notice a firmer ride, which I need for hauling a truck camper. It seems to handle a little better, but slightly harsher when empty. Raised the front about 1/2”. Happy so far. Time will be needed for better evaluation.
For right now it works
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