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. Every SumoSpring is handmade with care, making each one unique with its own natural characteristics, such as slight color variations and surface bubbles—proof of the craftsmanship that goes into every piece. SumoSprings Solo Kits are a one-piece unit attached on one side used as a replacement/upgrade to factory bump stops.SumoSprings Front for Chevrolet Kodiak 4500|5500, GMC TopKick 4500|55001500 (lb) Capacity at 50% CompressionCompress up to 80% of original height with full memory reboundSold as a pair (left and right)Maintenance-freeEnhances load carrying abilityReduces and stabilizes swayImproves overall driver control and ride comfort One-piece unit attached on one side used as a replacement/upgrade to factory bump stopsprogressive spring rate with superior damping propertiesMade from proprietary and patented microcellular urethaneWill not leak or rupture Never load any vehicle beyond the manufacturer’s GVWR Application(s) Summary: Make Model Year Drivetrain Chevrolet C4500 Kodiak 2003-2009 4 X 2 Chevrolet C5500 Kodiak 2003-2009 4 X 2 GMC C4500 Topkick 2003-2009 4 X 2 GMC C5500 Topkick 2003-2009 4 X 2 th, td { padding-right: 20px; } .product-table-top { display: block; max-width: -moz-fit-content; max-width: fit-content; overflow-x: auto; white-space: nowrap; }