It was a different thing in america. the mod vs rocker thing did not exist in america.
Here it was greaser vs preppie. Greasers were blue collar boys who worked their way through high school. They worked evenings at a trade while going to school in the day. The preppies went for all the sports and didnt’ work. After highschool preppies either went to college or they went to west point.
A greaser was a boy who worked in a trade that got him greasy fingernails. A preppie was a boy who was preparing for college. their wheels were not so disimilar in america as they were in england.
preppies had newer cars and did not ride motorcycles.
greasers had old cars, heavily modified...and harley motorcycles heavily modified, and english motorcycles heavily modified.
Both greasers and preppies were equally adept at fighting. Both greasers and preppies were equally adept at racing. Both greasers and preppies were equally adept at scoring chicks.
The rivalry was not like that in england.
I was stationed in England in the 60’s. I remember that the Beatles were identified as Mods and the Stones were Rockers. My personal opinion at the time was that both groups were punks looking for attention and needed to grow up.