RC 1/14 KING HAULER Tractor Truck
The King Hauler is a scale tractor truck with a realistic ladder frame and a 3-speed gearbox. The suspension is equipped with solid axles with leaf springs just like full scale trucks.

Specifications
Scale: 1/14
Length: 23.62 inches (600mm)
Width: 7.20 inches (183mm)
Wheelbase: 17.60 inches (447mm)
Front Tread: 6.14 inches (156mm)
Rear Tread: 5.43 inches (138mm)
Weight: 6.17 lbs. (2800g)
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)
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
Please be advised when choosing a radio for your Tamiya Semi, you need to figure out what your final goal will be. Your choice is between an Analog or Digital trimmed 4ch radio.

If you plan on using your semi without an MFU (Multi-Function Unit), you can use either type radio.
If you even think you might use an Tamiya MFU on your semi, please only use a Analog radio.

Digital trim radios "WILL NOT" work with Tamiya MFU units.

How Can I tell if my radio is Analog or digital trim?

Analog - Radio Trims slide from one end to the other
Digital - Radio Trims are only switches and click in either direction, No Sliding 
 
About the Tractor Truck Multi-Function Control Unit
Tamiya presents incredible sound and action options for any 1/14 scale R/C Tractor Truck with the all R/C Tractor Truck Multi-Function Control Unit. This system, when mounted on the truck is located inside the cabin with speaker to the front and the MFC-01 unit to the rear. The control unit is mounted inside the left tool box for easy access.

A 4-channel R/C system activates all functions
By using your transmitter sticks and the trims you can control the truck movements (forward/backward running and turns), horn, motorized support legs (Item #56505) (sold separately), headlights, position lamps, roof lamps and speed indicators. You can also activate the back lamp, tail lamps and blinkers/hazard lamps as well as engine revving

Required Items: (not included - Sold Separately)
2-4channel Radio with servos, AC/DC Charger , 7.2V 6 Cell Battery , 8 AA Batteries, Electronic Speed Controller,
PS Paints and Tools