A step garnish for a rail and carrier seat system for motor vehicle is disclosed. The rail and carrier seat system includes two rails fixedly attached to and positioned laterally along a floor of the motor vehicle, a carrier laterally slidable within the rails, a handle attached to a laterally exterior side of the carrier, and a seat attached to the carrier. The step garnish includes an inner step garnish portion, the inner step garnish portion being installed below the handle on the carrier, the inner step garnish having an exposed portion; and an outer step garnish portion, the outer step garnish portion including a cut out clearance shape for being installed from above the handle, the cut out clearance shape having a shape substantially similar to the exposed portion of the inner step garnish.