Race Series Calico Coated Conrod Bearings to suit Holden / Nissan RB30 ( 6B2390HXC-STD )Our coated bearings combine ACLs tough RACE Series lining and overlay metallurgy with Calicos well renowned CT 1 coating. CT 1 is a Dry Film Lubricant coating that helps reduce friction and abrasive wear. It provides intermittent dry lubrication and is not affected by dust or dirt. CT 1 is specifically engineered to withstand the extreme conditions of todays high performance engines. Professional engine builders enjoy a higher level of confidence with