- Hydraulic arrangement for controlling a hydraulic cylinder of a suspension of an off-road vehicle, said hydraulic arrangement comprising a first output and a second output respectively configured to be fluidly connected to a road chamber and a piston chamber of said hydraulic cylinder, a source of fluid in pressure and a discharge, said hydraulic arrangement comprising a first valve fluidly interposed between said source, said discharge and a first conduit fluidly connecting said first valve with said first output and a second valve fluidly interposed between said source, said discharge and a second conduit fluidly connecting said second valve with said second output, said hydraulic arrangement comprising a first accumulator fluidly connected to said first conduit between said first output and said first valve and a first dumping module fluidly interposed between said first accumulator and said first conduit; and a second accumulator fluidly connected to said second conduit between said second output and said second valve and a second dumping module fluidly interposed between said second accumulator and said second conduit, said hydraulic arrangement comprising a pressure regulating valve fluidly interposed on said first conduit downstream with respect to said first valve, said pressure regulating valve being configured to vary the pressure of the fluid flowing into said first conduit, characterised in that said hydraulic arrangement comprising a control valve configured to generate a hydraulic signal for controlling said pressure regulating valve and said dump modules, said hydraulic signal being proportional to a electric input on said control valve, wherein said hydraulic arrangement comprises a third accumulator fluidly connected to said source via a charge valve, said control valve is fluidly connected to said accumulator, to said discharge, to said regulating valve and said dump modules, said control valve an electro-actuated pressure regulating valve and wherein each of said dump modules comprises a control valve and a lock valve fluidically in series one with respect to the other between said accumulator (22a, 22b) and said conduit (10a, 10b), said control valve of each of the dump modules being interposed between said accumulator (22a, 22b) and said lock valve, said control valve of each of the dump modules and said lock valve being fluidly connected to said hydraulic signal, said control valve of each of the dump modules being configured to regulate the passage of fluid between said accumulator (22a, 22b) to said conduit (10a, 10b) in function of the pressure of said hydraulic signal, while said lock valve being configured to selectively lock the passage of fluid between said accumulator (22a, 22b) to said conduit (10a, 10b) in function of the pressure of said hydraulic signal. said hydraulic arrangement comprising a first output and a second output respectively configured to be fluidly connected to a road chamber and a piston chamber of said hydraulic cylinder, a source of fluid in pressure and a discharge, said hydraulic arrangement comprising a first valve fluidly interposed between said source, said discharge and a first conduit fluidly connecting said first valve with said first output and a second valve fluidly interposed between said source, said discharge and a second conduit fluidly connecting said second valve with said second output, said hydraulic arrangement comprising a first accumulator fluidly connected to said first conduit between said first output and said first valve and a first dumping module fluidly interposed between said first accumulator and said first conduit; and a second accumulator fluidly connected to said second conduit between said second output and said second valve and a second dumping module fluidly interposed between said second accumulator and said second conduit, said hydraulic arrangement comprising a pressure regulating valve fluidly interposed on said first conduit downstream with respect to said first valve, said pressure regulating valve being configured to vary the pressure of the fluid flowing into said first conduit, characterised in that said hydraulic arrangement comprising a control valve configured to generate a hydraulic signal for controlling said pressure regulating valve and said dump modules, said hydraulic signal being proportional to a electric input on said control valve, wherein said hydraulic arrangement comprises a third accumulator fluidly connected to said source via a charge valve, said control valve is fluidly connected to said accumulator, to said discharge, to said regulating valve and said dump modules, said control valve an electro-actuated pressure regulating valve and wherein each of said dump modules comprises a control valve and a lock valve fluidically in series one with respect to the other between said accumulator (22a, 22b) and said conduit (10a, 10b), said control valve of each of the dump modules being interposed between said accumulator (22a, 22b) and said lock valve, said control valve of each of the dump modules and said lock valve being fluidly connected to said hydraulic signal, said control valve of each of the dump modules being configured to regulate the passage of fluid between said accumulator (22a, 22b) to said conduit (10a, 10b) in function of the pressure of said hydraulic signal, while said lock valve being configured to selectively lock the passage of fluid between said accumulator (22a, 22b) to said conduit (10a, 10b) in function of the pressure of said hydraulic signal.