In this how-to video, you will learn how to put back a 2 speed central gearbox in your RC vehicle. Take the time to clean your car. Remember that the shorter dog bone goes to the rear and the longer one goes to the front. Slide the dog bone in and make sure that it spins the wheels. Now, raise the dog bones and slide them into the drive cuffs of the central transmission. Once this is done, check by moving the tires to see if the gears are moving. Make sure the box fits into the place provided. You can now screw the box in. Do not forget to fit the brakes in. Remember the place where it was set. This video shows you how easy it is to install a 2 speed central gearbox into your RC vehicle.