Endlinks on your 2002-2007 Subaru WRX transmit the energy of the sway bar to the suspension control arms. OEM endlinks are only adequate on a totally stock car, once the suspension or tires have been upgraded they become a weak link and must be replaced. PERRIN polyurethane rear endlinks for your 2002-2007 WRX are made with stiff polyurethane bushings pressed into 6061T6 aluminum arms to provide a solid connection between your swaybar and chassis. This translates into a more predictable and better handling car.