Truck Camper Adventure has evaluated and rated several suspension products that address rear sag porposing, and sway. One product that we’re currently evaluating is a patented suspension product called SumoSprings. The product is made by SuperSprings, an American company based out of Carpinteria, California. SumoSprings are different from any other suspension product that we’ve evaluated thus far. You can say they are a hybrid. On one hand, they work like a standard bump stop; on the other, like an air bag. Unlike air bags, however, compressed air isn’t needed. Instead, the air found in each SumoSpring is contained within the rubber compound itself, which consists of a proprietary closed-cell micro-cellular urethane. This durable, “closed cell” construction results in a product that is less harsh on the road than standard rubber bump stops, yet smooths out the “rough edges” of travel like a good set of air bags.
But SumoSprings do more than offer a progressive spring rate on the road—they also keep your truck level. But that’s not all, like a good pair of shock absorbers, they also provide additional damping properties for your rig. The progressive property of the springs means you get more support when hauling a truck camper, less support when you’re not. Furthermore, SumoSprings reduce side-to-side body roll, resulting in a more stable, safer driving experience like a sway bar. We already have a Hellwig Big Wig rear sway bar on our truck, but it’s nice to have a “backup” in case it’s ever needed in an emergency. Moreover, SumoSprings are maintenance-free, will not leak air, and do not require airlines or compressors, meaning SumoSprings are much easier to install. In fact, it only took us two hours to install both.
Look for a full-length review on the SumoSprings later this summer.