AST Suspension Adjustable Lowering Springs - BMW M2 (F87) / 14-18 M3 (F80) / M4 (F82)The AST Adjustable Lowering Springs offer a solution to reduce your vehicle's center of gravity while preserving the comfort youre accustomed to from the original equipment manufacturer (OEM) springs. With this set of Height Adjustable Lowering Springs, youre not limited to a fixed lowering range. Thanks to the AST height adjuster, you can fine tune your ride height even after the kit has been installed, giving you ultimate flexibility. These springs