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Your cart is empty.SumoSprings are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and ride comfort. They are maintenance free, do not leak air, and do not require airlines or compressors. SumoSprings are manufactured in a variety of heights, diameters and densities to support multiple front and rear applications. They are manufactured from proprietary closed micro-cellular urethane providing a smooth and progressive spring rate with superior damping properties.
Joe A
2025-09-06 17:11:25
I was going to go with air bags for a number of reasons, but for the sake of cost and simplicityI went with Sumo's. They perform very well on my 2017 F150 by limiting lean, even when empty. They help reduce sway when towing and as well as sag. Towing is overall a better and more as stable experience. When empty, the small clearance over the axel keeps the ride the same as pre-Sumo (no spacer installed left about 1/2" clearance). I bought the blue ones, but if you plan on hauling full beds of dirt or heavy objects, get the heavier ones. A full load of dirt in my 6'9" bed will fully compress the springs. They still do their job, but they are maxed out.
sean c riggs
2025-08-22 16:25:54
My camper has the tendency to push the nose up and down on my truck over certain bumps. My camper is about 5,500 lbs and I keep the trailer level. It's a dual axle with very minimal things in storage compartments. I have the Roadactive coil springs installed. They help with body roll and absorbing the bounce some, but my truck would still bounce up and down. I think the short bed (5' 5") mixed with the truck being almost the same weight of the camper are the main causes of the porpoising effect, not tongue weight or height. I added these cushons and when I go over a bump, I don't bounce up and down several times. I bounce down and up once and the the sumo springs cushion/stop the next bounce. The sumo springs also reduced the bed drop with camper weight added. I went from about 1.5 inch drop to .5 inch. My ride with and without the camper didn't feel any more rough with the 1k sumo's installed
sammie
2025-08-09 10:43:20
super easy install with 2 bolts for each. 1 bolt into existing hole that held the bump stop. Other into product itself. Great feel as it works like a spring and has give initially. The 1k lb is Perfect for my cab over camper. It weighed about 1400 lbs when first tested and now I have it down to around 1,100 and I think this will ride just like stock with the weight loaded. I have a 4x4 and did not use the spacer, so there is a 1" or 1.5" gap before it engages, so you get the stock feel cornering until it engages after 1.5" of travel. Better than airbags for offroad and handling, as people say airbags are boucy to shift the weight back and forth as oppose to working like suspension is supposed to and work like by absorbing and compressing without the rebound of airbags.
SLJ
2025-07-14 10:15:23
I have a 2012 Ford F150 Ecoboost and pull a 5000# dry weight camp trailer with a weight distribution hitch. I debated for a long time on whether to purchase the blue (1000#) or the black (1500#) Sumosprings. I think I made the correct choice for me with the blue (1000#) springs. I did not use the 1" spacer that came in the kit and I have a little over an inch space with no load and about an inch engagement when the trailer is attached. The trailer feels more stable overall. When loaded, I can feel small bumps more than before, but larger bumps are more controlled and feel more stable. I think it's a pretty good tradeoff loaded with no ride difference unloaded.
Kindle Customer
2025-05-29 17:36:39
Directions said unscrew old and screw in new. (Paraphrased). Unscrewing the old bumpers was a major pain in the..... I managed to break free one of the welded nuts inside the frame. Both nuts must have been soaked in red thread locker. My gorilla hands didn't fit in the nearby hole in the frame. I ended up cutting off the bolt using a drill motor to spin the bolt and a mostly stationary hacksaw blade. After buying new hardened bolts and nuts I did eventually get these mounted after fabricating a custom fishing wire for the bolts and buying a few choice magnets. I lost a good 6 hours of my Fathers day making 2 trips to the hardware store in the course of my endeavor.I do however have to admit the end result was worth the effort. The truck no longer looks like I might be smuggling and its now much easier to control in high winds.
Robert
2025-05-10 18:28:10
Easy way to get rid of sag over rear axle when loaded. On my 2014 F150 STX 4x4 was about 1/4†above axle with spacer installed. Truck is a little more bouncy but most 4x4’s should be anyway.
Mats E Jonsson
2025-04-29 11:09:59
The instructions that come with the springs are really easy to understand. There is even a detailed list of all the tools needed so no crawling under the truck just to find out that you did not have the right tools. The installation itself is very easy. The set comes with a distance spacer for added stability. I opted to install without the spacer and could do that without raising the truck at all. Had I opted to install the spacer the truck frame needed to be raised about 1/2 inch.
Brandon
2025-04-18 18:10:02
Installed on a 2010 F150 4WD. Very easy to install. Each setup will differ slightly but with the spacer installed I have about an 1/8†of clearance above the axle. Some slight difference noticed without trailer. Feels stronger around turns in a good way. First trip towing our travel trailer was night and day better. The ride was so much smoother. It took nearly all the bounce out of the ride. Very impressed. So impressed I am ordering the Sumo Springs for our travel trailer also.
Tophatmax
2025-04-17 18:57:23
170,000km on my 2013 F-150, bought them for pulling a camper.After an easy install I gained a quarter inch clearance and lost a little chatter from my slightly worn rear shocks over normal road bumps and washboard. Don't need to replace shocks anymore making these basically free.On a slightly worn truck the ride feels like new again. I didn't expect that.I'll update this after pulling my camper but I've already got my moneys worth and haven't tried their intended purpose.
Anon
2025-04-15 16:37:13
Edit: after 5 months these are done, permanently deformed and almost useless. 2 months of heavy payloads and 3 months of lesser (800 - 1200lb) loads 3 - 5 times per week. Would the heavier 1500lb springs have lasted longer? we’ll never know. Trying something else to see if they will last longer.Added to my 2012 F150. I routinely carry near max capacity payloads and the Sumos have limited nearly all the sag. If I were buying again I would get the black though. The blue are softer and spongier than I would like over over most humps and bumps, especially on the highway BUT, they are great with half capacity or less loads.
brian kenning
2025-03-26 15:48:39
Fantastic product on my truck, really assisted with the sag from our heavy travel trailer and taking some of the bounce out of the rear during towing
Sean Hitchman
2025-03-21 10:10:43
Installed them today took 30mins. You need a 13mm socket for the oem bolt and a 15mm for the aftermarket bolt that connects the bracket to the frame. Other than that easy install. This was installed on 2019 xtr 4x4 only concern I have is how close the spring is to brake line bracket. The front end of the truck is now lower than the rear end when my travel trailer is installed. See how it goes after my first long distance trip.
K
2025-02-11 17:03:46
Tried the 1000lb blue springs on my 2020 F150 after using timbren springs. The Sumos are definitely smoother in unloaded driving and offer excellent stability and leveling when loaded. Just did 950kms with 6000lbs of trailer and gear. Crosswinds and hills were no issue with these installed - if you trailer or camp this is a really easy way to dramatically improve towing.
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