Strut for a vehicle

The present invention relates to a shock absorber (1) for a vehicle with an air spring unit (10) and a damper unit (11), which damper unit (11) comprises a damper tube (12) extending in a roll tube (13) of the air spring unit (10) extends, wherein the damper tube (12) distributed on its periphery arranged Abstutzgeometrien (14), against which a radially enlarged end (15) of the roll tube (13) is supported. According to the invention for supporting the roll tube (13) to the Abstutzgeometrien (14) of the damper tube (12) is provided a torsion element (16), which torsion element (16) between the radially enlarged end (15) of the roll tube (13) and the Abstutzgeometrien (14 ) of the damper tube (12) is arranged and wherein the torsion element (16) for torque transmission with the Abstutzgeometrien (14) forms a form-fit.