A stability system for a trike includes an articulating rear wheel assembly and a steering assembly. The articulating rear wheel assembly includes a swing arm and an articulating rear spindle.The articulating rear wheel assembly is connected with the steering assembly such that the wheel assembly rotates in a positive angle or in a negative angle in synchronous relationship with the front wheels of the trike.The steering assembly comprises a plurality of steering components. In some preferred embodiments the steering components may be bell cranks, tie rods, or push/pull rods.