SumoSprings are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and comfort. SumoSprings are manufactured in a variety of heights, diameters and densities to support multiple front and rear applications. All SumoSprings are manufactured from proprietary closed microcellular urethane designed to suit numerous applications. SumoSprings Compress up to 80% of original height with full memory rebound and stretch 50% of their height. They are maintenance free, do not leak air, and do not require airlines or compressors.