Sprinter SumoSpring Rear Helper Springs for 3500 and 4500 pair

These are the popular and well used Sprinter SumoSpring helper springs for the 2wd 3500 van, cab chassis, or RV. Available for the VS30 and 4500 too. SumoSprings are a micro cellular urethane product designed to help reduce rear-end sag and stabilize sway. They are a progressive spring with a very soft initial engagement. That means that as more weight is added, the harder they get and more they push back, providing support and control when you need it without affecting the factory ride when unloaded.   Easy installation with no leaks and no maintenance. The Sprinter SumoSprings mount using the factory bump stop brackets. No modifications or drilling are needed.  Never Exceed Gross Vehicle Weight Rating.  One of our first choices in suspension upgrades for the Sprinter van,  RV, or cab chassis. Front SumoSprings available here.   Not for Front Wheel Drive or Electric models Product capacity is 900 lbs at 50% compression on standard duty black product and 1400lbs at 50% compression on