A lock assembly includes a lock body with a bore extending from a top surface to a lateral side surface and a pin configured for receipt in the bore. A wear member configured for use with the lock assembly has an upper leg, a passage extending through the upper leg, and a fixation base recess formed into a lower side of the upper leg. The fixation base recess extends laterally between two opposing channels each having a lower surface angled downward toward each other. A fixation base configured for use with the lock assembly has a central opening extending through the top surface and bounded at a front side by a lock wall configured to engage a portion of a lock. Opposing first and second wings extend upward and laterally outward away from the central opening and have a lower surface angled downward toward the central opening.