Remove rear wheels.
Remove the clips (1) (with a thin screwdriver).
Release partially the rear fender liner (from each side).
Loosen the fixing screws (2) bumper (3).
Disconnect connector (4) (if necessary).
Pull on the sides (in the arrows board «A»).
Pull back to release the bumper in the area «IN».
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Remove bumper (3).
Remove fasteners (5).
Remove the side bumper mountings (6-7) (left and right).
Remove the center support of the rear bumper (8).
Install the parts in reverse order.