BMW F80 M3 F82 M4 Pair Front Shock Absorber Assembly Left and Right Pair 31312284787 31312284788. These fit pre and post LCI F80 M3 and F82 M4 models, in good working order. One of the acceleration sensors (last photo) appears to have some damage and a repair, it is very easy to swap the sensors over which are already on your vehicle onto these shock absorbers. Any questions, please ask.