I, personally, have never seen it aftermarket, but that doesn't mean it doesn't exist.
The only OEM set up I'm aware of was on the FXDP Police bikes. With the FXDP, it's almost $800 for the parts from HD, and about $400 used if you can find them, not including the engine guard.
Anyone creative enough could make something work, then sent it for rechrome after modding it, but it depends on what you wanna spend.
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~
R.I.P. Rubberdown. 1971-2012
"Your Jedi Mind tricks will not work on me...... ~Misinlink-2016~
2005 E.G. Classic
S&S 510 cams
Baisley Oil pump spring
SE 3.5" pipes
S&S adj pushrods