Beiou carbon fiber complete mountain bike MTB bike Shimano DEORE 610 RT 27.5 complete bike 30 Speed BO-CB020 BO-CB020, a High-End Professional Carbon Fiber MTB, with Speed 30/Hydraulc Braking/Pneumatic Front Fork/ Whole bike weight 10.8KG, is a symbol of BEIOU professional rank bike series. The great performance makes you experience the real feeling of off-road.