Abstract: A suspension system for isolating a load (L) independently from two separate inputs (IA, IB), such as a pair of wheels. A slider (19) is slidably mounted to a frame member (11) supporting the load and pivotable supports a common swing-arm (23). Each end of the common swing-arm is coupled to corresponding input swing-arms by a linkage assembly (24) comprising a pair of link-arms (25A, 25B) in a manner that an input disturbance will be transferred by the corresponding input swing-arm to its link-arm which will cause a positive translation and rotation movement of the the common swing-arm relative to the the frame member, such that the common swing-arm will pivot a certain degree about the other link-arm but without substantially moving the latter, thereby maintaining the undisturbed input independent from the disturbed input. The suspension system may be applied to bicycles, motor-cycles, automobile axles and rolling vehicles in general.