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ACL Race Series main bearing set for Nissan RB25 and RB30 engines in standard size. These high-performance main bearings are intended for engine rebuilds where tighter tolerances and reliable crank support matter. Supplied as a complete main bearing set, they provide a direct-fit option for rebuilds and performance-oriented engine assemblies that call for trusted bearing components.
ACL Nissan RB25/RB30 Standard Size High Performance Main Bearing Set
