Abstract: The invention relates to a rapid recovery shock absorber system with hydraulic end stop, comprising a stem (3) and a body (1), in which a piston (8, 9, 10, 11) runs which is fixed to a tube (71) and which defines at least one upper chamber (S) and one lower chamber (I) in the body (1). A body (32, 32a) in the stem (3) comprises a housing (321), in which a piston (33, 33a) runs which is connected to a rod (7) which slides in the tube (71). A clamp (31), for fixing the shock absorber system to the vehicle, tensioning means (35, 37, 39), exerting a force which tends to displace the piston (33, 33a), sliding in the stem body (32, 32a), driving the displacement of the rod (7) which results in the opening or closing of a section of an oil passage in the lower chamber (I) towards the upper chamber (S) are also provided.

Abstract: This invention relates to an adjustment device for a hydraulic shock absorber. This hydraulic shock absorber device is characterized in that it comprises a monoblock head (1) designed to be fitted with a removable shock absorber cylinder, a fluid reservoir and adjustment device (2, 3, 6) for high shock absorber piston displacement speeds and adjustment device (2, 3, 4) for low shock absorber piston displacement speeds, the monoblock head (1) comprising a duct enabling fluid circulation between the shock absorber and the reservoir, in which the high and low speed adjustment device (2, 3, 4, 6) are assembled such that their axes of symmetry are coaxial with the duct.