The stem is the component on a bicycle that connects the handlebars to the steerer tube of the bicycle fork. Sometimes called a goose neck, a stem's design belongs to either a quill or threadless system, and each system is compatible with respective headset and fork designs: Quill: the stem inserts into the steerer tube which is threaded and which does not extend above the headset. Threadless: the stem clamps around the steerer tube which is not threaded and which extends above the headset.
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Bicycles are probably the best way to get around New York City, especially during these days of empty roads and social distancing. There's just one problem every aspiring city cyclist faces: bikes take up a lot of space in a shoebox apartment. Well, that and bike theft ...