There are two answers to your question! The Bagger Brace will fit recent dressers/touring models. You should go check their website to see if your model is covered. There are several other brands making similar devices, any one of which will also probably fit.
These kits all set out to fit things to your bike the factory has made no brackets for. So most of the parts they supply are creating the necessary places to fit a third stabilizer link. Dressers have one in front of the engine, another at the heads and this new one goes under the back of the gearbox.
Over the years the design of dressers has changed, so earlier models need different brackets. If you have an earlier dresser like my 1990 FLHS, the only brand I found that supplies a kit is TrueTrack. So you need to find a brand that makes a kit for your model - the more recent it is the more kits will fit.