Kyosho Mini-Z MR-03S2 La Ferrari Vehicle, Metallic Red MR-03 chassis is equipped with a special Sports 2 circuit board. Combines high performance and compatibility with all body styles Features the newly designed FHS 2.4GHz Perfex KT-19 transmitter. Equipped with a trim knob to adjust an optional light unit All MINI-Z Racer bodies can be installed. *Requires compatible motor case and diff gear assembly Chassis can be set to either narrow or wide tread by replacing the front lower and upper plates and steering tie rod. Of course the wheelbase can still be adjusted to suit certain car types Factory-assembled Ready Set is truly ready to go as soon as you install four AAA-size alkaline batteries in the transmitter, and four more in the car