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"Bicycle Wheel is Duchamp’s first readymade, a class of objects he invented to challenge assumptions about what constitutes a work of art. Duchamp combined two mass-produced parts—a bicycle wheel and fork and a kitchen stool—to create a type of nonfunctional machine. By simply selecting prefabricated items and calling them art, he subverted established notions of the artist’s craft and the viewer’s aesthetic experience. The 1913 Bicycle Wheel was lost, but nearly four decades later Duchamp assembled a replacement from newly found prefabricated parts and affirmed that the later version is as valid as the original."
Source : MOMA collection: