Four links per car, used an upper wishbone in the rear upper forward and rear upper rearward position This control arm is used in two locations for a total of four control arms in the rear suspension. This control arm is generically referred to as a wishbone and features an inner rubber mounting bushing as well as an outer ball joint. Both the inner bushing and outer ball joint can wear with age and will need to be replaced if play is detected. FCP Euro highly recommends replacing all installation hardware for a complete installation.