This is the 1/10 scale electric powered, radio controlled, ready to run Ferrari 458 Challenge On-Road Car from Tamiya. Chassis: TT-01 type ES, streamlined version of the TT-01 type E chassis-compatible with a variety of Tamiya Option Parts Drive: Four wheel shaft drive Motor: 540 motor with pre-attached leads Differentials: Bevel gear, bushing equipped Gearbox: Sealed, front and rear Radio: Tamiya Finespec 2.4GHz ESC: Tamiya TEU-105BK with reverse Body: Painted and trimmed with decals and rear wing Shocks: Plastic bodied, friction Tires: Treaded 1.02" (26mm) wide, 2.6" (65.5mm) diameter Wheels: 2.1" (53mm) outer diameter, 0.94" (24mm) wide Bumper: Front foam Suspension: Independent double wishbone Camber: Non-adjustable, camber refers to the angle of the tops of the tires from vertical when viewed from front or behind vehicle Caster: Non-adjustable, caster/toe-in refers to the angle of the front suspension when viewed from the side of the car in relation to the chassis Steering: Bell-crank type with servo saver Ferrari 458 Challenge On-Road Car with Radio, Motor, ESC, Painted Body and Instruction Manual AA Batteries: Eight for transmitter Battery: 7.2V 6-cell stick Battery Charger: To match selected battery Building and track equipment Vehicle- Length: 16.7" (425mm) Width: 7" (178mm) Wheelbase: 10.1" (257mm) Body- Length: 17.4" (441mm) Width: 7.5" (190mm) Height: 3.8" (97mm) For Replacement or to upgrade to Ball Bearings use: Qty. Size Location Qty. Bearing Set 12 5x11mm front & rear diff gears, hubs 6 DTXC1547 4 8X12mm front & rear diff gears 2 DTXC1597 jxs 07/11/13 ir/jxs &