Sway bars, anti-sway bars, roll bars, anti-roll bars and stabilizer bars are all the same thing, and it’s generally understood they improve handling, but how?
Any time a vehicle is turning, forces related to the laws of physics cause the body to roll, sway or tip away from the turn. When this happens, the weight shift to the outside, in turn compresses the suspension on the outside, resulting in lift and a loss of traction on the inside, which leads to poor handling and potentially the loss of control.