SpecificationsLength: 460mm, Width: 182mm, Height: 143mmWheelbase: 257mm??Tire Width/Diameter (Front & right back): 27/67mmBathtub-type FrameShaft Driven 4WDFront/Rear 3-Bevel Resin Differentials3-Piece Steering Tie-Rod4-Wheel Double Wishbone SuspensionFront/Rear Friction DampersGear Ratio = 8.35:1Type 540 MotorElectronic Speed Controller (Forward/Reverse kind) needed ItemsR6/AA/UM3 batteries for transmitter