The invention relates to a rear area arrangement of a motor vehicle body structure, comprising a base sub-assembly (10) comprising a load floor and two rear wheel arches (11) extending on either side. of said load floor, as well as two lateral silhouette sub-assemblies (30) each comprising a rear flap gutter liner (32) and a quarter panel liner (34); said sub-assembly of the base (10) and lateral silhouette (30) respectively comprising two lower (20) and upper (40) lateral reinforcements extending two-by-two substantially vertically one above the other and fixed to each other at their corresponding ends by bolting. Figure to be published with the abstract: Fig. 1
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