ACL Bearings 3M2977-STD Race Series Main Bearing Set

The ACL Bearings 3M2977-STD is a standard size main bearing set engineered for performance and durability in demanding applications. Part of the acclaimed ACL Race Series lineup, these main bearings feature advanced tri-metal construction designed to withstand higher RPM conditions and extreme loads.

Key Features:

• High-strength overlay plate with reduced thickness for improved fatigue resistance
• Hardened steel backing provides superior support and bearing retention
• No flash plating on bearing backs maximizes heat transfer and housing grip
• Increased eccentricity compensates for bore distortion at high RPM
• Precision-engineered to OEM specifications with performance enhancements
• Standard size (STD) for use with standard crankshaft journals

ACL Race Series bearings combine over 50 years of race bearing design experience with advanced metallurgy and engineering. These main bearings deliver the durability and performance demanded by engine builders and racers worldwide, from street performance builds to professional motorsports applications.