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An electromechanical actuator is presented for the active control of a sports car's rear axle kinematics with a high performance-to-size ratio not available on the market up to now. Toe and camber values of both rear wheels are controlled independently to reach the optimum position of the tire contact patch on the ground for each driving situation. The complete system utilizes 4 actuators and is known as Active Kinematics Suspension (AKS). The actuators substitute the camber and toe links in a multilink suspension, without major modifications, on the prototype of an existing car. The actuators are capable of covering the high axial forces seen in the links and can rapidly alter the wheel position. The heart of the actuator is a hollow-shaft brushless DC motor running efficiently in field control. It drives a recirculating ball-screw which transfers the motor's rotational motion to a translational displacement of a central rod.