Track Bar
A suspension bar that prevents lateral movement of a solid axle relative to the vehicle frame.
A track bar, also known as a Panhard rod in some suspension designs, is a structural link used to control lateral (side-to-side) axle movement in vehicles with solid axles, such as Jeeps and heavy-duty trucks. One end of the track bar is bolted to the vehicle's frame, while the opposite end is bolted to the axle housing.
By connecting the frame to the axle diagonally, the track bar allows the axle to move vertically as the suspension travels over bumps, but prevents the axle from shifting left and right under lateral forces. The bar features rubber or polyurethane bushings at each end to absorb road vibrations.
Over time, the bushings wear out and develop play. When the track bar bushings fail, the axle can shift side-to-side, causing loose handling, steering wander, and a severe front-end oscillation known as 'death wobble.'