What does FX stand for on a Harley Davidson?
The FX designation on a Harley Davidson motorcycle stands for "Factory Experimental." It was first used in 1971 on the FX Super Glide, which was a custom motorcycle that featured a longer front end, a bobbed rear fender, and a raked steering head. The FX designation was later used on other Harley Davidson models, including the FXR Super Glide, the FXST Softail, and the FXWG Wide Glide.