ACL Bearings 7M1532HX-STD Race Series Tri-Metal Main Bearings

ACL Race Series Main Bearings are engineered for high-performance and racing applications where extreme RPM and loads demand superior durability. These tri-metal bearings feature an advanced metallurgical design that combines strength, heat dissipation, and oil film retention for maximum protection under demanding conditions.

Key Features:

• High-strength overlay plate with optimized thickness for improved fatigue resistance and longevity
• Hardened steel backing on all bearings provides enhanced support for the bearing lining and superior retention in the housing
• Increased crush ensures positive bearing retention and prevents bearing movement
• No flash plating on bearing backs maximizes heat transfer to the engine block and improves grip between bearing and housing
• Increased eccentricity compensates for bore distortion at high RPM and promotes proper hydrodynamic oil film formation
• 3/4 groove design optimizes load-carrying surface area while maintaining proper oil flow to connecting rod bearings
• Tight wall tolerances help maintain consistent bearing clearances for reliable performance
• Enlarged ID chamfers accommodate large fillet radii found on performance crankshafts

This set includes both upper and lower main bearing shells. ACL Race Series bearings are the choice of professional engine builders and racers who demand proven performance and reliability.