Bike Frame Portion

FIG. 1 is a front and right side perspective view of a bike frame portion embodying our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front and right side perspective view thereof in the context of a completed bike frame.

The broken lines in the drawings illustrate portions of the bike frame that form no part of the claimed design.