Currie Antirock sway bars are categorized by their overall width and the diameter of the center of the bar. The splines on the ends are all the same diameter and count so you can mix and match the sway bars and the sway bar arms. The bar best suited to the 4Runner was 50 inches in length and is 0.900 inches in diameter. This same bar is used for the two-door JK Wrangler. Tony used a desert racing trick and wrapped the bar’s center in electrical tape to protect it from chipping and corrosion.