ACL Bearings 4B1101-.25 Connecting Rod Bearing Set Undersize - 25mm

The ACL Bearings 4B1101-.25 is a high-performance connecting rod bearing set designed for precision engine builds. This tri-metal bearing set features .25mm (0.010 inch) undersize dimensions, making it ideal for use with reground crankshafts that have been machined to restore worn journals.

Key Features:

• Tri-metal construction with copper-lead bearing surface for superior load capacity
• Hardened steel backing provides enhanced support and improved bearing retention
• Precision machining with tight wall thickness tolerances ensures consistent oil clearances
• High-strength overlay plate with optimized thickness for improved fatigue resistance
• Increased crush for improved bearing retention in the connecting rod housing
• Manufactured to exacting tolerances with micron-level precision measurement systems

ACL bearings are engineered for performance applications where reliability and durability are critical. The tri-metal design delivers excellent seizure resistance and the ability to withstand demanding operating conditions. Each set includes all bearing halves required for a complete connecting rod installation.