The AST BMW F90 M5 Adjustable Lowering Springs are designed to improve the performance and handling of your BMW F90 M5. These springs are adjustable, allowing you to lower the ride height of your vehicle, resulting in improved cornering and stability. The springs are made from high-quality materials and are designed to last, with a corrosion-resistant coating to ensure longevity. They also feature a progressive spring rate, which helps to provide a comfortable ride while also improving performance. The springs are an ideal upgrade for any BMW F90 M5 owner looking to improve their vehicle’s performance and handling.