Currently set up for 5S electric. Can be easily converted to .46 i/c (motor mount and tank included). The Challenger is light, straight and has never been crashed. As an electric, it flys smoothly with plenty of power for big loops and vertical lines.
Additional cost options Servos: 4 x Hitec 225s: $50 Electric power system: Turnigy 4240 motor and Turnigy Plush 50 ESC: $50. Several 5S 4600mah batteries also available.