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The SumoSprings® improve the load leveling ability of the original equipment's front and rear coil springs. 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 creating a cushion effect, enhancing capacity and ride comfort. 

The front Coil SumoSprings are sold as a pair (left and right). They simply slide between the turns of existing coil springs.  They reduce side-to-side body roll and front end dip increasing the coil capacity by 15-30%. 

The rear SumoSprings are also sold as a pair (left and right). They reduce and stabilize sway and improve overall driver control and ride comfort. They are a one-piece unit attached to one side used as a replacement/upgrade to factory bump stops. They will not leak or rupture and compress up to 80% of the original height with full memory rebound. 

SumoSprings® can be added to the Mercedes-Benz Sprinter chassis, Ford Transit chassis and the RAM ProMaster Chassis. 

*Never load any vehicle beyond the manufacturer's GVWR. 


Speak to one of our Service Consultants to learn more about SumoSprings and schedule your service to get them added to your RV at 641-585-3213.

Handling and Suspension Upgrades

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