The Curb Feeler ® is a stock Harley Heritage rear fender that has been lengthened (about 6") and skirted (~ 1") with the lead widows peak on the tail.  It got its name because the first customer that we did this modification for promptly backed the bike up into a curb when he picked it up from us!  The bottom picture shows the brackets that we fabricated for a sissy bar to slide down into.

Mocking up how much to add

detail of the tail light mods

the leghtened and skirted fender

complete with the sissy bar brackets and widows peak formed out of lead