Ключевые слова: bicycle, bike, black, chain, closeup, cogwheel, component, concepts, contemporary, crank, cycle, cycling, derailleur, deralieur, equipment, extreme, fitness, gear, gearwheel, healthy, lifestyle, link, machine, macro, metal, metallic, mountain, objects, part, pinion, race, racing, spoke, sport, sprocket, steel, tensioner, transportation, vehicle, wheel,