B58 Main Bearing Set, High-Performance Z4 E89 particularly at startup or during

particularly at startup or during operation

It's also a good idea to have the cylinder head and block checked for flatness and resurfaced if necessary

MADE IN USA

and enhanced reliability for engines pushing their limits

Please check your tolerances and size before installation

B58 Main Bearing Set, High-Performance Z4 E89 particularly at startup or during5150 AutoSport High Performance Calico Coated Main Bearings are designed specifically for BMW and Toyota B58 engines. These bearings are coated by Calico to significantly reduce friction, making them ideal for high stress, high performance builds. Their advanced coating helps maintain durability and performance under extreme conditions, such as forced induction and racing applications where OEM bearings often fall short. What sets these bearings apart