SuperSprings SSR-207-47 | SumoSprings Rear for Chevrolet Silverado 2500|3500, GMC Sierra 2500|3500, black

For my particular application 2015 Silverado 2500hd with a 35’ 5th wheel cargo trailer. They installed in about 11 min including jacking up each side. Nothing fancy, jacked up on the front leaf spring mount, popped the old ones out with a thin long flathead screwdriver, added just a little soapy water to the install side, pushed them into place and dropped the jack. They got pushed all the way in when it landed.It only helped ride height by about an inch, but overall it doesn’t dip and bounce down the freeway and even cut down on the rear hopping down the freeway.Relatively cheap, extremely easy, and effective for both towing and not towing.

Product works well a little harder to install then what the instructions said. But in the end does what it was designed to do.

Super easy install. Have them on 2 2022 3500 silverados. Work great with or without loads.

Very easy to install. Unloaded these Sumo Springs have softened the bounce. Trust this will reflect with a 5th wheel attached even better.

If your truck is leveled like mine, these Sumo Springs won’t provide much support to keep the truck level under weight. For the amount of weight I haul or tow, truck squats a minimum of 1/2-3/4” which many might not consider to be bad, but I like to ride level. I know for a fact that the truck would squat more than that without them in place, so they definitely provide some support.The conclusion I would draw on these Sumos is that they’re meant to provide much better results on trucks with the factory rake in place. Whether that rake is 2.25” (which was mine before leveling), or more, their function is to support the factory leaf springs; not take up the majority of the weight like airbags would.I ended up installing a set of ReadyAir airbags which work phenomenal in my leveled application, but still kept the Sumo Springs on the truck. I found that the Sumos definitely improved the ride quality in the rear end by eliminating that bottoming out effect both loaded and unloaded. Not to mention, there’s not much of that “bouncing” effect either. You don’t feel them during normal driving which is a huge plus. You know they’re working when you see vehicles in front of you bottoming out, but when you go over that same dip/bump, you practically glide right over it with a minor effect.These definitely support the rear shocks in daily driving from incurring too much pressure (for example, from bottoming out and then extending back out to the normal length). In my case, they help to support the airbags from “over compressing” before I get a chance to air them up, or when I’m off roading. Not to mention, they’re somewhat of a back up in case the airbags fail completely.All in all, if your truck is leveled, the Sumos may not be the best solution to keep your truck level under weight unless it’s for the comfort reasons mentioned above. I’d recommend a set of airbags at that point because they offer more adjustability. On the other hand, these will work a lot better with trucks that have a factory rake.If you’re looking for a good set of airbags that won’t affect your ride quality in a negative way, ReadyAir is the way to go. They’re not like traditional double bellow style airbags offered by AirLift, Firestone, and/or PacBrake. They’re of a single sleeve style design which allow you to retain full suspension travel and don’t include that typical “bounce” feeling/effect.