Ключевые слова: abstract, bicycle, bike, biking, bolt, cassette, chain, chainring, chrome, closeup, commuting, concept, cycle, cycling, disc, disk, drive, environment, equipment, frame, freewheel, gear, gearbox, healthy lifestyle, land vehicle, link, mechanism, mountain, mtb, nobody, outdoors, pedal, reflector, retro styled, rotor, shift, speed, spoke, sport, sports race, steel, technology, tire, transmission, transportation, travel, wheel,