Work with rear axle block adjusters, Part #DS-195104; replace OEM #'s 47554-73 (end cover) and 7725 (lock nut) Feature die-cast construction with highly chromed finish Deliver increased rear axle adjustment Fit models with square swingarms Will not fit FLT or FXR models. Assemble with anti-seize compound on threads.. SW-ARM END CAP ADJ73-86BT