Build your own Lego fighting robot with parts from set 42140 App-Controlled Transformation Vehicle! This fully motorised, fully remote control robot is armed with lifting forks and speedy drive; ready to do battle in the arena. You will need a copy of set 42140, plus an additional Large Powered Up Motor (88013), and a smartphone capable of running the Lego Powered Up app. These instructions also show you how to increase the forks' lifting power with an 8-tooth gear (10928) and a 24-tooth gear (part 3648). Questions or feedback about this shop item? Please feel free to send them to my email inbox at distehman@yahoo.com!