FIG. 1 is a perspective view of a bicycle stem, showing my new design in which the front end and tube are shown in broken lines which form no part of the claimed design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a side elevational view thereof, of which the opposite side is a mirror image;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a top plan view thereof.