The ornamental design for a motorcyclestirrup, as shown and described.
FIG. 1 is an isometric view of a motorcycle stirrup.
FIG. 2 is a front elevation view of the motorcycle stirrup of FIG. 1.
FIG. 3 is rear elevation view of the motorcycle stirrup of FIG. 1.
FIG. 4 is a left side elevation view of the motorcycle stirrup of FIG. 1.
FIG. 5 is a right side elevation view of the motorcycle stirrup of FIG. 1.
FIG. 6 is a top plan view of the motorcycle stirrup of FIG. 1.
FIG. 7 is a bottom plan view of the motorcycle stirrup of FIG. 1; and,
FIG. 8 is an isometric view of a motorcycle stirrup shown in use on a portion of a motorcycle.
Portions of FIGS. 1 through 7 and the motorcycle in FIG. 8 are shown in broken and dash-dot-dot-dash lines illustrating portions of the article and environmental subject matter, respectively, that form no part of the claimed design.