This inner ring provides the cylindrical bore raceway used together with a matching needle roller and cage assembly or needle roller bearing without an inner ring. It has a bore diameter of 9.0 mm, a width of 12.0 mm, and a net mass of 4.5 g, giving the mounting seat needed to complete a full bearing arrangement on the shaft. The cylindrical design (XL execution) allows the ring to be fitted directly onto the shaft seat, providing a hardened running surface for the rolling elements where the shaft itself is not suitable as a raceway. It is intended for use with a corresponding needle roller and cage assembly sized to the same bore and width, and its exact dimensional match keeps radial internal clearance within the design intent of the paired components.