A motorcycle having a motorcycle frame that includes one or more frame members with an adjustable mechanism for increasing or decreasing the stiffness of the frame member. By adjusting the stiffness of one or more frame members, the overall stiffness of the motorcycle frame may be increased or decreased. The adjustable mechanism may be controlled by an actuator, such as a hydraulic pump, that is, in turn, controlled by a computer control system. The control system may include sensors for determining performance parameters while the motorcycle is in use. For example, a speedometer may sense motorcycle speed and a gyrometer may sense the orientation of the motorcycle when in turns. Thus, in one example, the stiffness of the motorcycle frame may be increased if the motorcycle speed reaches a threshold speed. Further, the stiffness may be increased if the gyrometer senses that the motorcycle is engaged in a power slide.