ACL Honda 4 1958-2056cc Race Series Engine Connecting Rod Bearing Set

This ACL Race Series connecting rod bearing set is built for performance applications where tighter tolerances and improved oil flow are critical. These bearings are made with a tri-metal construction, featuring a copper-lead alloy overlay for strength and durability, a middle layer of aluminum-tin for improved embeddability, and a steel backing for structural integrity. The .25mm undersize means these are intended for crankshafts that have been machined down by 0.25mm to correct for wear or to achieve a specific clearance. They are designed to fit a range of Honda and Acura engines, as well as the Isuzu Oasis, covering displacement from 1958cc to 2056cc.

When rebuilding or modifying an engine for higher performance, precise bearing clearances are essential. These ACL bearings help ensure proper oil film thickness, reducing friction and wear under demanding conditions. Always refer to your engine's service manual for the correct bearing clearance specifications and installation procedures.