ACL Race Main Engine Bearings B and K Series 5M1959H

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  • Designed to withstand higher RPM conditions in your B18C1/B18C5 engine.
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention.
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and also to maximize the grip between the bearings and housing.
  • Tight consistent wall tolerances to help you maintain consistent clearances during engine assembly.