UMI’s heavy duty boxed lower a-arms P/N 2314 with dual rod ends provides a rock-solid foundation for your autocross, road race or corner carving 4th Gen. The a-arms fully gusseted box tubing construction combines strength with a five pound weight savings per set over factory lower a-arms. Shock mounting is double shear with a ½” dia x 1-¼” width racing coilover mount – suitable for most racing coilover systems. Revised ball joint location adds a nominal 2 degrees caster increase. These arms have double shear sway bar mount tabs with endlink set included. P/N 2314 is designed to work with the factory K-member, UMI k-members, and virtually all aftermarket K-members. Crafted with pride in Philipsburg, PA- USA.