In Northern California's Marin County, cycling enthusiasts modified pre-WWII bicycles to ride down Mount Tamalpais' slopes, developing their bikes through rigorous testing and risking their lives. From humble beginnings, scavenging from dumpsters and junkyards, a multi-billion dollar industry, mass recreation, and an Olympic event emerged. These early bikes, affectionately known as Klunkerz, were the foundation of it all.
Klunkerz
In the late 1960s and 1970s, pioneers of mountain biking in Marin County, Northern California, revolutionized the sport by taking their bicycles off-road.
