We claim the ornamental design for a pair of motorcycle crash bars, as shown and described.
FIG. 1 is a perspective view of the right hand crash bar of the pair of motorcycle crash bars;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of the left hand crash bar of the pair of motorcycle crash bars;
FIG. 9 is a front elevation view thereof;
FIG. 10 is a rear elevation view thereof;
FIG. 11 is a left side elevation view thereof;
FIG. 12 is a right side elevation view thereof;
FIG. 13 is a top plan view thereof; and
FIG. 14 is a bottom plan view thereof; and,
FIG. 15 is a perspective view of the pair of motorcycle crash bars in which the right hand and left hand crash bars are interconnected by a connector piece.
The broken line showing of the connector piece is for the purpose of illustrating environmental structure and forms no part of the claimed design.