Required to install detachable accessories on select models.

Fits '11-'17 FLS, FLSS and FXS, '05-'17 FLST and FLSTN, '03-'17 FXSTS and FXSTSSE, '06 FLSTFSE and '05-'07 FLSTSC equipped with H-D® Detachables™ accessories without saddlebags. See docking hardware chart for specific applications.