ACL Bearings 6B2390HC-.25 Race Series Calico Coated Connecting Rod Bearing Set

The ACL Race Series 6B2390HC-.25 is a high-performance connecting rod bearing set engineered for Nissan RB30 engines. These bearings feature ACL's advanced Calico coating for enhanced durability and seizure resistance in demanding racing applications.

Key Features:

• Calico coated bearing surface for superior wear resistance and reduced friction
• 0.25mm undersize for reground crankshafts
• Trimetal construction combining high strength with excellent seizure resistance
• Micron tolerance machining ensures precise wall thickness and crush for consistent clearances
• Enlarged chamfers accommodate large fillet radius on performance crankshafts
• No flash plating applied to maximize heat transfer and bearing retention

ACL Race Series bearings are manufactured to exacting tolerances with precision measurement systems that deliver consistent accuracy to critical characteristics. These professional-grade bearings are proven in motorsports competition from drift racing to drag racing, trusted by engine builders worldwide for their endurance and capability in high-performance applications.