SuperSprings International 1000lb capacity sumosprings rear solo kit for silverado/sierra 1500

SSR-209-40 (previously SSR-209) SumoSprings fits rear spring suspensions on GM 1500 1988~present and the Colorado/Canyon 2004~2012 (excludes Z71 suspension) . They bolt to the frame. They will increase the capacity adding constant heavy loads. Additionally they reduce side-to-side body roll . SumoSprings are produced from microcellular urethane utilizing closed cell technology. This materials progressive spring rate creates a cushion effect providing smooth engagement and a comfortable ride. The shapes, sizes and density of the proprietary microcellular urethane material are modified to suit different load bearing and sway controlling applications. After installation SumoSpring require no adjustment and there is no modification to any original equipment leaving all factory warranty’s intact. All SumoSprings are completely maintenance free.