ACL Bearings 4B1972HC-.025 High Capacity Rod Bearing Set Undersize - 0.025

The ACL 4B1972HC-.025 is a high-performance rod bearing set designed for Honda and Acura K-Series engines including K20A2, K20Z1, K20C1, K24A, and K24Z1, featuring Calico's CT-1 Dry Film Lubricant coating. This advanced coating helps reduce friction and abrasive wear while providing intermittent dry lubrication that is not affected by dust or dirt. ACL Race Series performance engine bearings are manufactured to exacting tolerances, with micron tolerance machining supported by precision measurement systems delivering consistent accuracy to key characteristics like wall thickness and crush.

Key Features:

• 0.025mm oversized rod bearing set for precision engine building
• CT-1 coating specifically engineered to withstand extreme conditions of high performance engines
• Tri-metal construction with hardened steel backs and identical upper and lower halves
• Blend of characteristics providing high strength and excellent seizure resistance with no flash plating for improved retention and maximum heat transfer
• Increased embedability, strength and durability for professional engine builders

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, serving as standard components in race engines that have set records and won championships from sport compact drift racing to NASCAR, IHRA and NHRA competitions. This bearing set is ideal for high-performance rebuilds and racing applications where reliability and precision are critical.