A spinal rod with multiple sections having eccentric centers for use in a spinal fixation device is disclosed. The spinal rod may include a first longitudinal portion and a second longitudinal portion adjoined together by a transition portion. The first longitudinal portion may extend along a first longitudinal axis that extends lengthwise through a center of the first longitudinal portion and the second longitudinal portion may extend along a second longitudinal axis that extends lengthwise through a center of the second longitudinal portion. The transition portion may be configured to transition from the first cross-section to the second cross-section such that the first longitudinal axis is offset with respect to the second longitudinal axis. In at least some embodiments, a first outside surface of the first longitudinal portion may extend along a co-extensive plane with a second outside surface of the second longitudinal portion.