Unscrew the screws that attach the angles to the wings and the bolts that attach the brackets to the body or the brackets to the bumper.
Front
Rear
How to remove front and rear bumper Renault Espace 2 (1991-1996)
How to remove front and rear bumper Renault Espace 3 (1997-2002)
How to remove front and rear bumper Renault Espace 4 (2002-2014)
How to remove front and rear bumper Renault Espace 5 (after 2015)