The H&R Sway Bar Kit - 71385 is a performance upgrade for vehicles that helps to reduce body roll and improve handling. It includes front and rear sway bars that are made from high-quality materials and are designed to be easily installed on most makes and models of cars. The sway bars are thicker and stiffer than stock bars, providing improved stability and responsiveness during cornering and other maneuvers. This kit is a popular choice among car enthusiasts looking to enhance the performance of their vehicle.