The Koni Special Active Shock FSD 07-13 BMW X5 (E70) Right Rear is a performance-oriented shock absorber designed to provide superior handling and ride comfort for the 2007-2013 BMW X5 (E70). It features Frequency Selective Damping, which allows for adjustable damping forces based on the frequency of the road surface, providing a smooth and comfortable ride. The shock is also adjustable, allowing the driver to fine-tune the suspension setup for their specific driving needs. The Koni Special Active Shock FSD is built to last with high-quality components and is backed by Koni's lifetime warranty.