Vehicle Center Frame Module

A vehicle center frame module includes a pair of side sills, each side sill including a side sill inner having a closed cross section and a side sill outer having a closed cross section, wherein an inboard side surface of the side sill outer and an outboard side surface of the side sill inner are joined, and a plurality of crossmembers connecting the pair of side sills in a transverse direction of a vehicle, the crossmembers including a first crossmember and a second crossmember disposed behind the first crossmember in a longitudinal direction of the vehicle.