A row unit for an agricultural implement includes a closing disc configured to move soil into a trench. The row unit includes a first arm having a first end coupled to a center portion of a coupling and a second end configured to rotatably couple to a support structure of the row unit. A second arm includes a first end coupled to an outer portion of the coupling and a second end configured to rotatably couple to the support structure. The outer portion of the coupling is rotatable relative to the center portion, and rotation of the outer portion relative to the center portion drives a rotational axis of the closing disc to revolve about a longitudinal axis of the center portion to enable the closing disc to maintain a desired toe angle relative or a desired camber angle as the row unit travels across a field.