The SUBARU front sway bar and end links work as a system to improve vehicle handling and stability. Some vehicles do not have a rear sway bar. Some people may ask if the rear sway bar is necessary. The answer is, if the vehicle came with it, it is necessary, because that is how the vehicle was engineered.
The benefits of the sway bar are not always immediately apparant during normal daily driving, but in an emergency maneuver if it is broken or missing it can result in dangerous handling characteristics. For this reason, iIn areas that have required vehicle safety inspections, the sway bar and end link are normally part of the inspection checklist.
