Description The Eibach PRO-KIT is a premium line of lowering springs designed to enhance the performance and appearance of your vehicle. Whether you’re a car enthusiast looking to improve the handling of your daily driver or motorsports competitor looking for an edge on the track. the Eibach PRO-KIT has you covered. This Part Fits Year Make Model Submodel 2015-2020 BMW M4 Base 2019-2020 BMW M4 CS 2016 BMW M4 GTS.