ACL B18c1/B18c5 Vtec Standard Size High Performance W/ Extra Oil Clearance Rod Bearing Set 4B1925HX-STD

Race™ Connecting Rod Bearing Set (4B1925HX-STD) by ACL®. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Race Series engine bearings. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are standard components in race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA and NHRA cmpetitions. The unique combination of design, metallurgy and engineering provides Race Series performance bearings with he endurance and capability to perform where others cannot. The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings.Specifications:Size: StandardMin Shaft Size: 1.7707"Max Shaft Size: 1.7717"Min Tunnel Size: 1.8898"Max Tunnel Size: 1.8898Max Wall Size: 0.0586"Max Overall Length: 0.689"Oil Clearance Size: + 0.001" ExtraQuantity: 8 PiecesHalf Type: Identical HalvesFeatures:High strength overlay plate with reduced thickness for improved fatigue propertiesHardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housingIncreased crush for improved bearing retentionElimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housingIncreased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearingsTight consistent wall tolerances to help you maintain consistent clearancesEnlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshaftsACL® Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Race Series rod and main bearings are standard components in race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA, and NHRA cmpetitions. The unique combination of design, metallurgy, and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot. These exceptional bearings are available for a variety of American, Asian, and European performance engines.