Ключевые слова: alloy, background, bicycle, bike, black, bolt, cassette, chain, chain ring, chainring, chrome, circle, closeup, cogs, component, crank, cycle, drive, equipment, fix, gear, gearing, gearshift, gearwheel, isolated, machine, mechanic, metal, mountain, mtb, object, part, pedal, pinion, power, rear, repair, ring, set, speed, sport, sprocket, stainless, steel, technology, tooth, transport, transportation, vehicle, wheel,