The ProTaper Micro Throttle Tube kit is designed to work exclusively with the ProTaper Micro Handlebar. The downsized design is purpose built to give youth riders a reduced hand-hold area to grasp while riding and racing. By reducing the hand-hold area, youth riders can now grasp the throttle the same way an adult rider grasps a traditionally-sized throttle; resulting in more rider control and drastically reduced hand fatigue. Utilizing a two-piece design, the Micro Throttle Tube can be fitted to any 2-stroke model off-road bike of 85 cc and smaller by using one of the seven optional throttle cams.