Ключевые слова: actuator, arm, bicycle, bike, brakes, cable, cam, chain, chrome, cogs, cycling, disk, drive, frame, freewheel, gearbox, gears, isolated, linkage, macro, mechanism, metal, mountain, mtb, pads, pedal, ratchet, rotor, shift, shiny, speed, spokes, springs, sprocket, steel, tire, tooth, transmission, tyre, wheel,