ACL Bearings 4M2942-STD Performance Main Bearing Set Standard Size

The ACL Bearings 4M2942-STD is a standard size main bearing set engineered to deliver exceptional performance and reliability in demanding engine applications. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, providing the quality and precision needed for high-performance builds.

Key Features:

• Manufactured to exacting tolerances with particular attention paid to wall thickness accuracy, ensuring reliable fit and helping maintain consistent clearances
• High strength overlay plate with reduced thickness for improved fatigue properties
• Increased crush for improved bearing retention and elimination of flash plating on the back of the bearings to improve heat transfer and maximize grip
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films
• 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings
• Tight consistent wall tolerances to help maintain consistent clearances

This main bearing set is designed for standard crankshaft journals and represents ACL's commitment to precision engineering. The unique combination of design, metallurgy and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. Ideal for engine rebuilds, performance upgrades, and racing applications where reliability and consistent oil clearances are critical.