Bobcat S510, S530, S550, S570 and S590 skid-steer loaders, and T550 and T590 compact track loaders, are M Series upgrades to the company’s K Series units. The S510, S550 and T550 feature a radius lift path; the S530, S570, S590 and T590 models feature a vertical lift path. The M Series vertical lift path machines feature an increased lift height over the equivalent K Series models: S150, S160, S175, S185, S205, T180 and T190.