The Tamiya RC 1/14 Ford Aeromax from our radio controlled trucks, trailers, and construction vehicles range - Tamiya's model of the Ford Aeromax tractor truck boasts both large scale realism and authentic functions. Servo-shifted 3-speed transmission is mounted at the front of the aluminum ladder frame.Specifications: Length: 24.17 inches (614mm) Width: 7.48 inches (190mm) Wheelbase: 17.60 inches (447mm) Front Tread: 6.14 inches (156mm) Rear Tread: 5.43 inches (138mm) Weight: 6.39 lbs. (2900g) Chassis: Aluminum ladder Suspension: Solid Axle Damper Type: Metal friction Drive Train: Gearbox (3-speed) Gear Ratio: 10.6:1 - With the 3-speed gearbox, 10.6:1, 17.7:1 and 32.4:1 are possible Differential Type: Bevel Gear Engine: Electric 540 Wheels & Tires: Chrome/Radial Body Type: Styrene(plastic) Needs: ESC: Electric Speed Controller or a Truck MFU Radio Control Unit: (not included) Can be operated with a 2-channel radio but a 4-channel system is recommended for potential future options. Battery: Requires a 7.2V battery and charger Spare Parts & Hop Up Options: 56501 - Tractor truck electrical unit set 56502 - RC Semi Trailer Light Set 56503 - Tractor truck oil shocks 56504 - Roof spoiler 56506 - Animal guard 56507 - Telescopic antenna 56511 - Tractor Truck Multi-Function Control Unit We have packaged the radio control system, electronic speed controller, batteries and charger together for an easy additional purchase.Trailers available to purchase seperately: 40 Foot Container and Semi-Trailer 3 Axle Reefer Semi-Trailer Flatbed Trailer Pole Trailer Semi Trailer Tanker Trailer Manufacturer: TamiyaModel: 56309 RC Ford Aeromax Model KitScale: 1/14