Profile: Lemdor Control Arm Co., Ltd. is a manufacturer of various types of control arms for different car makes and models. The suspension system has many parts working together to enrich the driving experience. One contributing component in the suspension system is the control arm. Located between the frame and rear axle housing, the control arm can be found in the shape of the letter A with two pivotal points. The wider ends are attached to the frame and the pointed end is attached to the steering knuckle. The control arm helps with good vehicle handling. The control arm in your vehicle carries the torque which is generated as a result of applying brakes.