ACL Bearings 4B1972HC-.25 High Performance Rod Bearing Set Undersize

The ACL Bearings 4B1972HC-.25 is a high-performance connecting rod bearing set designed for demanding engine applications. This precision-engineered bearing features ACL's advanced tri-metal construction with a steel backing, copper-lead intermediate layer, and proprietary high-performance coating for superior durability and protection.

Key Features:

• 0.25mm undersize specification for machined crankshafts
• High-performance coating (HC) for enhanced wear resistance and friction reduction
• Tri-metal construction with steel backing for maximum strength
• Copper-lead bearing material for excellent load-carrying capacity
• Precision tolerances for optimal oil clearance and performance
• Ideal for high-performance and racing applications

ACL Race Series bearings are engineered to withstand extreme loads and temperatures, making them the choice of professional engine builders and performance enthusiasts worldwide. The undersize design accommodates crankshafts that have been ground to restore journal dimensions.