A four-wheel drive conversion on a Ram 3500 heavy-duty truck, combined with a suspension lift, creates a vehicle significantly modified for enhanced off-road capability. This typically involves replacing the factory two-wheel-drive system with a four-wheel-drive powertrain, including a transfer case, front axle, and driveshaft. The suspension lift increases ground clearance, allowing for larger tires and improved approach, departure, and breakover angles. An example would be a 2022 Ram 3500 Tradesman originally equipped with two-wheel drive being converted to four-wheel drive and fitted with a 6-inch suspension lift and 37-inch off-road tires.
Such modifications significantly improve performance in challenging terrains like mud, rocks, and snow, making the vehicle suitable for activities such as off-roading, overlanding, and search and rescue operations. Historically, four-wheel drive conversions and lift kits were primarily used for utility and off-road racing, but they have become increasingly popular for recreational use. The increased demand has led to advancements in component technology, offering improved durability, reliability, and performance.