ACL H Race Main Bearings STD B16A B17A B18A B18B C1 C5 B20B B20Z K20A2 A3 Z1 A1 K24A2 A4 A8

One often overlooked part when building an engine is the bearings. Getting a quality set of bearings can directly determine the longevity of your engine.ACL Race Series Performance Engine BearingsThe unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditionsFeatures: 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 bearings and 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