These are a direct replacement to the stock rear arms of the Tamiya Falcon. They are much more rigid that the originals and the geometry has been altered slightly so that the dog bones are less likely to part ways from the car. These have been tested and have not lost the bones once but they were also not abused in running. Please note that as with all 3D printed parts, it is highly recommended that you use a stock motor. Please see the video below for the installation of the arms and what is needed to prep them.

https://youtu.be/nQh3kynPdr4