FIG. 1 is a top perspective view of a motorcycle seat showing my new design; FIG. 2 is a side elevational view thereof; FIG. 3 is an elevational view of the side opposite from that in FIG. 2; FIG. 4 is a rear elevational view thereof; and, FIG. 5 is a front elevational view thereof. The broken lines in the drawing figures illustrate stitching.