The UMI traction bar pivots for 1970–1981 GM F-Body are required when using the 3/4" relocation position on UMI 2624 brackets or similar Herb Adams mod–style brackets. These pivots provide the correct mounting interface for that relocation setting and ensure proper function of traction bar systems when the bracket position is changed.
UMI Performance 70-81 GM F-Body Traction Bar Pivots (for 3/4in relocation)