Using archival footage, photographs, and interviews, the film tells the story of the early days of mountain biking. In the 1970s San Francisco was the vortex of American counter-culture. Over the Golden Gate Bridge, another movement started. The kids here scavenged bikes from junkyards and adapted motorcycle parts, and a billion dollar industry was born: the mountain bike, also known as klunkerz.
IMDb 7.7/1020071 小時 24 分鐘 
