Female bikers to guys are probably like female cowgirls or female construction workers or rocker chicks or female truck drivers. Attractive sexy real women doing things that guys normally do, but looking sexy because they are sexy, beautiful in a lot of cases and feminine. Its like looking at us but seeing attractive sexy feminine women not dykes (not that there’s anything wrong with that if that’s who you are) doing these activities instead.
I believe this is why guys like action movies or action TV shows featuring if not having an attractive sexy women playing the lead in the movie who looks great who’s a real women, but kicks ass and doesn’t take lets say junk from anyone (to keep it clean). The movie Barb Wire with Pam Anderson comes to mind or Thelma and Louise with Susan Surandon and Gina Davis would be another good example of that. Intent to Kill with Tracy Lords playing a big shot tough sexy Los Angeles police detective dressed as a biker chick most of the movie, but drives a car would be another example as well.
So seeing attractive women on bikes in the biker gear denim or leather or both either sitting behind her boyfriend or riding the bike herself, I gotta admit gives me a ride (pardon the pun) and a lot of other guys rides as well. Because they are seeing the attractive sexy feminine versions of ourselves and makes the experience that much more entertaining and why you see a lot of movies now and twenty-five years ago of essentially sexy attractive women essentially quite frankly playing the roles of dudes.