Check out my process of preparing to flat tow a vehicle with my 2014 Thor Ace 29.2 Class A RV. The Four major components you need are
1. Vehicle that can be Flat Towed ** Do your research!
2. Base Plate that is attached to the tow vehicle
3. Tow Bar; connects Tow vehicle to RV
4. Braking system
Can’t forget wiring for brake lights