When Patrick Jane is giving Lucas Hodge a driving lesson, Lucas Hodge is shown wearing his seat-belt and not wearing his seat-belt between shots.
While talking about the motorcycle club, Jane asserts that the appeal of motorcycles and the mobility they bring is "why the girls went for Cain and not Abel." In the Bible, however, Cain was a farmer while Abel tended to livestock.
Also Abel was, famously, murdered putting rather a dampener on his love life.
Motorcycle Clubs, even the 1% ones, are not gangs and nobody associated with them would call them a gang.