The ACL Race Series main bearing set for Nissan RB25 and RB30 engines is a 0.25 oversize, CT-1 coated high-performance main bearing kit meant for oversized journal fits. Supplied for engine rebuilds or performance builds that require a larger main bearing diameter, this Race Series set matches reworked crank journals and retains ACL’s CT-1 coating specification for these Nissan engines.

ACL Nissan RB25/RB30 0.25 Oversized High Performance Main Bearing Set - CT-1 Coated