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A heavy front load can make your ride sag and throw off your steering and braking. These SumoSprings Solo Custom Helper Springs add up to 500 lbs of support at 50-percent compression so your front end stays level and steady. They cushion bumps, absorb shocks, and help your factory suspension handle extra weight without bottoming out or feeling harsh.
These microcellular urethane springs compress progressively depending on the load. Light loads engage softly for a smoother ride, while heavy loads can compress up to 80 percent to give the extra support your suspension needs. The result is balanced handling that feels stable whether you’re driving empty or carrying more up front.
Each spring works on its own to handle uneven or off-center loads. When a curve or crosswind tries to push you around, the independent action keeps each side planted to cut down on body roll and sway. You’ll notice steadier steering through corners and less rocking when pulling into uneven driveways or parking lots.
These helper springs install easily without drilling and require no air lines, tubing, or pressure checks. The closed-cell urethane material resists oil, salt, and UV damage, performing reliably from -25 F to 200 F. Once installed, they work quietly in the background with no maintenance—just consistent suspension support every time you hit the road.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Cary A.
4/6/2021
It’s now been two years since I installed the Sumos on my 2018 PleasureWay Ascent 2017 Sprinter chassis. I remain convinced that Sumos are the best bang for the buck suspension enhancement available. I strongly recommend doing both front and rear at the same time—I initially did only the back to counter some bottoming I was experiencing, especially when I carried my Vespa scooter on the back. But after another thousand miles, I installed front Sumos. Overall, the ride was improved, sway was reduced, and although the camper handled fairly well stock, it handles much better with the Sumos in all respects. Plus I gained about 58” clearance. All that, without compromising the ride comfort in any way makes them a really good purchase.
Kris
3/17/2024
Would notcould not go back to not having Sumosprings. Best investment for my vans handling.
Robert
4/5/2025
My Sumo sprigs are still doing there job eliminating sway. On my 2020 MB 2500 pleasure way camper van Ascent TS.??
Ed
9/17/2024
Does exactly what it is advertised to do. Very happy with the product.
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James
6/3/2023
Worked so well I now have them on another Rv and put them on my power wagon