With all the components that make up the XR250 1979 (Z) USA CRANKCASE assembly. The Bolt,flange, 6x32 is the most frequently specified with eight applications.
The sub assemblies and components that make up this Crankcase include this Crankcase,lower, the most expensive part.
twenty-two components are shown in this Xr250 1979 (z) Usa Crankcase exploded diagram.