The Lords of Flatbush (1974 480p)

The Lords of Flatbush is a 1974 American comedy film directed by Martin Davidson and Stephen F. Verona. The film stars Sylvester Stallone, Perry King, Paul Mace, Henry Winkler, and Susan Blakely. Stallone was also credited with writing additional dialogue. The plot is about street teenagers in leather jackets from the Flatbush neighborhood of Brooklyn, New York. The movie, along with American Graffiti, the television hit Happy Days, the musical Grease and its film adaptation, and novelty rock act Sha Na Na was part of a resurgence in popular interest in the ‘50s greaser culture in the 1970s.

https://en.wikipedia.org/wiki/The_Lords_of_Flatbush