Two companies decide how nearly every bicycle shifts.
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Campagnolo
Vicenza since 1933, and it invented the quick release.
🇮🇹
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DT Swiss
Biel. Spokes, hubs and wheels used by half the peloton.
🇨🇭
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Rotor
Madrid. Cranks, power meters, oval rings.
🇪🇸
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Magura
Bad Urach. Hydraulic brakes since 1893.
🇩🇪