These two pieces allow you to mount a full size battery in your Element Enduro chassis. It is specifically designed for the Gatekeeper, however it will fit other Enduro model with a solid front axle. This kit includes an aluminum servo mount and an aluminum battery tray. If you don't want to run a full size battery this is also a great solution for mounting electronics on the large plate. This kit will fit a full size battery under the Gatekeeper cage.