Klunkerz: A Film About Mountain Bikes

Klunkerz: A Film About Mountain Bikes is a 2006 documentary about mountain bike history during its formative period in Northern California. It examines the relationships of the Marin County hippies, athletes, and entrepreneurs who were directly responsible for popularizing off-road cycling. The film includes many interviews with those present during the embryonic stages of the sport, including Gary Fisher, Charlie Kelly, Joe Breeze, Tom Ritchey, Mike Sinyard, and Otis Guy, and covers "the treacherous old Repack races." The film was written, produced, and directed by independent California filmmaker Billy Savage and released on October 8, 2006.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.