Used for a week. Too stiff for my liking. Practically new. Why you need these endlinks OEM steel endlinks are small, flimsy, and can fail if a larger rear sway bar is installed. OEM endlinks are weak and will flex greatly after installing a stiffer aftermarket sway bar. This flexing makes your stiffer aftermarket swaybar feel less responsive. PERRIN Polyurethane Endlinks are made with stiff polyurethane bushings that have been pressed into 6061T6 aluminum arms to provide a solid connection between your sway bar and chassis. This will translate into a more predictable and better handling car.