Torsion bars are a type of spring used in vehicle suspension systems. They consist of a long, cylindrical bar that twists to absorb shocks and support the weight of the vehicle. When the vehicle encounters bumps, the bar twists, providing resistance and helping to maintain stability. These components are commonly found in automobiles, particularly in off-road vehicles and trucks. Torsion bars offer adjustable ride height and are often lighter than traditional coil springs, making them a popular choice for enhancing performance and handling in various driving conditions.