горный велосипед 21/24/27 скорость горный велосипед двойной дисковый тормоз с переменной скоростью горный велосипед оптом

material steel frame structure whole car processing customization yes brand all-action folding or not no propulsion mode chain model 26 load 112kg brake system double disc brake frame type hard frame front fork type spring fork (low-end no damping) configuration level luxury fever pedal type ordinary pedal brake type front and rear mechanical disc brake color red blue green size 20-inch 21 speed 22-inch 21 speed 22-inch 24 speed 24-inch 21 speed 24-inch 24 speed 24-inch 27 speed 26-inch 21 speed