This great looking taillight fits the entire area underneath Fat Bob style rear fenders from 7" (17.8cm) thru 9" (22.9cm) wide. However, due to their base design, they do not fit stock and stock style brackets such as our ZPN160133 and 160204. Installation is easy when you use our adjustable chrome taillight bracket. Taillight comes pre-wired, mounting bracket must be ordered separately. Does not fit 2008 thru 2017 FXDF Fat Bob.