and S14B27 engines found in the E30 M3

or G87 to new performance heights

To complement the valve springs

50mm Exhaust   Rally / Race

BMW S52 Applications:

5150 AutoSport High Performance Main Bearing Set, BMW N55 S50 Turbo and S14B27 engines found inDesigned for high performance engine builds, the 5150 High Performance Coated Main Bearing Set for BMW N55 engines is designed to meet the rigorous demands of enthusiasts and racers alike. These bearings feature advanced Calico coatings that significantly reduce friction, enabling engines to generate increased power while minimizing the risk of "spinning" under extreme stress. What sets these bearings apart from OEM options is their exceptional