The boot struts of your 25 are commonly called gas struts.
Gas struts consist of a small piston moving inside a narrow tube that is on one side fixed to the body of your car and on the other to the tailgate of your 25. Boot struts are essential for the suspension your tailgate. Thanks to gas struts, the latter can stay open without someone keeping it open.
A boot strut costs between £20 and £50.
To determine as well as possible which boot strut references will fit to your car, we recommend you select the model engine type of your Renault 25 in the drop down menu or enter your registration number.