ACL Race Series Main Bearings with Extra Lower Thrust Shell

ACL Race Series Main Bearings with Extra Lower Thrust Shell Brand: ACL Designed for high-performance and racing engines, the ACL Race Series main bearing set includes an extra lower thrust shell beyond the OEM configuration to provide greater versatility and durability under extreme conditions. Option to upgrade thrust capacity: Add the extra lower thrust shell to increase axial load support for high-power or high-RPM applications. Improved serviceability: Use the additional shell during rebuilds or when replacing worn thrust surfaces without sourcing separate parts. Enhanced alignment flexibility: Fit the extra shell to fine-tune crankshaft endplay for tighter tolerances and consistent bearing performance. Race-ready construction: Precision manufacturing and materials selected for fatigue resistance, heat dissipation, and reliable oil film formation. Ideal for engine builders and motorsport teams who demand robust thrust control and simplified maintenance. Backed by ACL’s reputation for high-quality engine bearings.