One hundred years ago, there was one basic bicycle type: frame, two wheels, narrow tyres, rim brakes, saddle, and handlebars. Nowadays, there are disc brakes, flat bars, knobby tyres, folding frames, ...
Make SFGATE a preferred source so your search results prioritize writing by actual people, not AI. ) owned by almost every U.S. household, the bicycle seems unsophisticated -- downright retro. So it ...
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