5150 AutoSport High Performance Main Bearing Set For BMW S58 Engine5150 High Performance Coated Main Bearing Set for the BMW S58 engine found in the BMW G87 M2, G80 M3, G82 M4, F97 X3M and F98 X4M vehicles. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent