ACL Acura B17A1/B18A1/B18B1 / B18C1/B18C5 VTEC / Honda K20A3/K20A2/K24A Standard Size High Performance w/ Extra Oil Clearance Main Bearing Set

* High strength overlay plate with reduced thickness for improved fatigue properties * Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. * Increased crush for improved bearing retention * Elimination of flash plating on the back of the bearings to improve heat transfer through the bearing sand to maximize the grip between the bearings and its housing. * Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. * 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. * Tight consistent wall tolerances to help you maintain consistent clearances. * Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

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