Ключевые слова: bicycle components, bicycle gear cluster, bicycle gear repair, bicycle gears, bicycle maintenance, bicycle repair, bicycle transmission, bicycle upgrade, bike cassette, bike component, bike drivetrain, bike gear ratio, bike gear set, bike mechanic, bike parts, bike transmission, bike workshop, cassette gears, cycling accessories, cycling equipment, cycling gear maintenance, cycling gear mechanism, cycling gear system, cycling gears, cycling mechanics, cycling performance, cycling technology, gear assembly, gear cassette, gear cassette assembly, gear hub, gear mechanism, gear mechanism parts, gear ratio, gear shifting, gear shifting system, gear teeth, gear train, mountain biking, road cycling,