This component is a torsion spring that connects the left and right wheels of a vehicle, specifically within General Motors’ “F-body” platform (typically referring to the Camaro and Firebird models produced from 1967-2002). Its function is to reduce body roll during cornering. As an example, when a vehicle turns, the outside suspension compresses while the inside suspension extends. This device resists this motion, keeping the vehicle more level.
The installation of a performance-oriented version improves handling characteristics and enhances stability, especially in high-speed maneuvers. A firmer version decreases the amount of lean experienced during cornering. Historically, factory-installed versions were designed for a compromise between ride comfort and handling. Upgrading to an aftermarket part provides a noticeable improvement to the handling dynamics, leading to increased driver confidence and control.