Related Photo Galleries
Panhard bars, often called track bars, are familiar to many Mustang enthusiasts, but Watts links are new to many. This photo ought to clear up what they look like. Their job is to locate the axle side-to-side under the body-or keep the body from shifting laterally over the rear axle, depending on your point of view. The Watts link's advantage over the Panhard bar is it doesn't move in an arc, and therefore it doesn't induce any unwanted motions of its own.