Progress Tech Adjustable end-link kit. This adjustable end-link kit replaces the standard OEM links to give you many quiet and trouble-free miles. This kit uses our latest H-D ball-socket ends. Adjust each link to the OEM length or fine-tune your application for zero pre-load and no cross-weight. Adjustment Range: 58mm - 64mm (center to center). This kit is ONE PAIR of adjustable end links, includes four M10-1.25 flange nuts and two M10-1.25 jamb nuts.