The H&R 07-13 BMW X5 E70 Sport Spring (w/o Self-Leveling/Incl. Diesel) is a suspension upgrade designed to improve the performance of BMW X5 E70 vehicles. It is specifically designed for vehicles without self-leveling suspension and includes a set of four progressive-rate sport springs that are designed to reduce body roll, improve handling, and provide a lower center of gravity. The springs are constructed from high-tensile chrome-silicon steel for a long-lasting and reliable performance. They are also corrosion-resistant and come with a lifetime warranty.