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The ACL Race Series main bearing set for Nissan RB25 and RB30 engines is a 0.025 oversize, CT-1 coated high-performance kit specified for rebuilds requiring an oversize main to match machined crank journals. Offered as a Race Series replacement, these mains provide the stated oversize dimension and ACL’s CT-1 surface treatment for applications where precise bearing sizing is necessary.
ACL Nissan RB25/RB30 0.025 Oversized High Performance Main Bearing Set - CT-1 Coated
