The H&R 09-15 BMW 750Li F02 Sport Spring (w/Self-Leveling) is a suspension upgrade designed to improve the handling and performance of the BMW 750Li F02 chassis. The sport springs provide a lowered center of gravity, improved cornering stability, and a more aggressive stance while maintaining a comfortable ride. The self-leveling feature ensures that the car's ride height remains consistent, even when carrying heavy loads. The springs are made from high-quality materials and are backed by a lifetime warranty.