ACL Bearings 5M5585H-.25 Performance Series Main Bearing Set

The ACL Bearings 5M5585H-.25 Performance Series Main Bearing Set delivers precision-engineered engine protection for high-performance and racing applications. This main bearing set features ACL's advanced tri-metal construction with a steel backing, copper-lead intermediate layer, and proprietary overlay material for superior load capacity and wear resistance.

Key Features:

• -.25mm undersize for use with reground crankshafts
• Tri-metal construction for maximum durability and heat dissipation
• Precision bore geometry ensures optimal oil clearance
• High crush design for secure seating in housing bores
• Advanced overlay material reduces friction and prevents scuffing
• Manufactured to strict OE tolerances with enhanced performance characteristics

ACL Performance Series bearings are designed for demanding applications including turbocharged, supercharged, and high-RPM engines. The undersize specification allows machinists to restore proper clearances on worn or reground crankshafts while maintaining optimal lubrication and durability.