The rear suspension sphere for the Citroën DS with LHM system is a vital component of the car's hydraulic suspension system. This sphere is filled with nitrogen gas above a flexible membrane, working with LHM fluid in a pressure vessel, ensuring a smooth and comfortable ride. The Citroën DS suspension allows it to absorb road irregularities, significantly enhancing ride comfort. Regular maintenance of the suspension spheres is essential to retain their performance, as gas loss may lead to a stiffer ride. Replacement ensures optimal functionality and driving experience.