Enhance your vehicle's load-carrying capacity with SuperSprings' rear SumoSprings. Each SumoSpring is handcrafted with care, resulting in unique natural characteristics like subtle color variations and surface bubbles - a testament to the craftsmanship behind every piece. These maintenance-free rear suspension enhancements are designed to provide a better driving experience. Crafted from microcellular polyurethane, they reduce rear-end sag, increase load capacity, and minimize vibration, sway, and harsh rebounds. The SSR-217-47-2 has a 1,500 pound capacity when compressed 50 percent. To maintain full memory rebound, the Black SumoSprings should not be compressed beyond 65 percent of their original height. These Black SumoSprings are backed by SuperSprings limited lifetime warranty against defective materials and workmanship. SuperSprings International got its start in South Africa some 30 years ago, and since then they've become a globally acclaimed brand with a mission to make journeys better all over the world. - Vehicle Compatibility: Fits 2019-2023 Silverado 1500 & 2019-2023 Sierra 1500; Fits new body style only; Fits both 4x2 & 4x4 models.