A weight distribution hitch is a device used to ensure that the tongue weight of a trailer is kept at a safe 10 to 15 percent of the load. It is also known as a load-equalizing hitch or load leveler hitch. When towing a trailer, the weight of the trailer can cause the back of the towing vehicle to squat, which can cause the front of the vehicle to rise and affect handling, steering, and braking. A weight distribution hitch helps to distribute the weight across the axles of the vehicle and trailer, rather than being centered on the point where the trailer and vehicle connect. This can help to reduce trailer sway and hop, which can be dangerous at high speeds.

The weight distribution hitch consists of three main components: the ball mount, hitch receiver, and spring bars. The ball mount is part of the tow vehicle that looks like a round ball, while the hitch receiver is a type of trailer hitch that bolts onto the underside of the tow vehicle. The spring bars are a vital part of the weight distribution hitch, as they help force the trailer to stay in line with the towing vehicle.

Weight distribution hitches are necessary when the weight of what is being towed starts to outweigh the vehicles weight by one-half. They can help to relieve part of the enormous stress on the vehicles bumper during a heavy tow, which is vital to preserving the vehicle investment. Beyond that, they make it possible for drivers to steer, turn, control, and brake the tandem vehicle and load effectively. Under certain circumstances, weight distribution hitches are required by law.