Abstract: In an internal combustion engine having two or more coplanar cylinders radially disposed about a crankshaft, a crankshaft journal bearing arrangement in which the big ends of the connecting rods are each formed as segments of a continuous circular bearing for assembly about a single crankshaft journal. The big end of each connecting rod comprises an internal arcuate bearing segment and concentric external bearing segments. When assembled about the crankshaft journal, the external bearing segments are encircled by two containment rings whereby the internal arcuate bearing segments are maintained in operational engagement with the crankshaft journal. The containment rings are fixed for rotation with the crankshaft and relative sliding movement between the containment rings and the assembled connecting rod big ends occurs at the external bearing segments.