Depending on the year of release of attachment is different.
Front bumper
-open the hood.
-under the hood take out the rivets and remove the plate.
until 2009
-Unscrew the screws (spun down) and remove the grille (the lower part rests on the latch)
-remove the grille (held on latches).
-under the grille, Unscrew the screws.
after 2009
-Unscrew the screws (spun down) that secure the upper part of the bumper.
-wrenched the wheel depending on which side we understand.
-wheel arches take out the rivets that attach the fender liner.
-remove the fender liner to the side and take out one piston on each side (inserted from the bottom up) holding the corners of the bumper to the wings.
-perimeter of the lower part and pull out the caps and Unscrew the screws.
-in the upper Central part of the lower grille and pull out the cover and Unscrew the screw under it.
-we release the latch in the wings (gently pull the corners themselves).
-with the assistant pulls the bumper forward (don't want to break the wires and hoses).
-remove the connectors from the equipment (if any).
-switched the washer hoses (may leak the fluid).
Rear bumper
-open the trunk lid and the tailgate.
-in the opening of the trunk Unscrew two screws on each side and pull themselves rear lights.
-the rear lights take out the caps.
-in the corners of the opening and pull out the pistons and remove the pads.
-under pads take out the rivets that attach the Central part.
-take out the caps on the perimeter of the lower part (inserted from the bottom up).
-in the wheel wells, Unscrew the screws and take out the rivets that attach the fender liner and mud flaps.
-for wheel arch liners Unscrew one screw on each side (spun upwards) holding the corners of the bumper to the wings.
-with the assistant release the latch in the wings (pull the corners apart).
-carefully (don't want to break the wires) pulls the bumper back.
-remove connectors from electrical equipment.
How to remove front and rear bumper Mitsubishi Outlander 1 (Airtrek) (2001-2006)
How to remove front and rear bumper Mitsubishi Outlander 3 (after 2012)