Vehicle body frame structure

A vehicle body frame structure, comprising:

• a left and right pair of side frames, each extending in a vehicle front-rear direction;
• a first cross member and a second cross member extending in a vehicle width direction and spanning between the side frames, at a vehicle front side of the side frames, the first cross member and the second cross member being in this order from the vehicle front side;
• a center frame extending toward a vehicle rear side from a substantially central part, in the vehicle width direction, of the second cross member;
• and
• a stopper member provided at a substantially central part, in the vehicle width direction, of either one of the first cross member or the second cross member so as to be positioned between the first cross member and the second cross member in plan view, with a gap provided between the stopper member and another one of the first cross member or the second cross member.