ACL Race Series Main Bearings 6-Groove Set Standard Size

ACL Race Series Main Bearings 6-Groove Set — Standard Size Brand: ACL High-performance main bearings engineered for racing engines and high-stress applications. This 6-groove set provides targeted oiling where engines need it most while maintaining robust support at every main journal. Features Includes 6 grooved bearings and 4 standard (non-grooved) bearings for a complete main bearing set. #4 journal features oil grooves on both sides of the shell for enhanced lubrication at the center main. All other grooved shells have oil grooves on the block side only, optimizing oil distribution to rod and main journals. Manufactured to standard size tolerances for straightforward installation and reliable performance. Benefits Improved oil flow and film strength at critical journals reduces friction and wear. Designed for sustained high-RPM use and the demands of motorsport applications. Direct replacement set for engines requiring mixed grooved/non-grooved configurations. Refer to the included shell diagrams for exact bearing placement and the dual-groove configuration on the #4 journal. Choose ACL Race Series Main Bearings for precision lubrication and race-proven durability.