Carbon mtb frame, 29er carbon frame, 1. Super lightweight 2. BSA/BB30 SYSTEM 3. 17/19/21'' size 4. 1 year warranty Carbon mtb frame, 29er carbon frame, mountain bicycle frame1. Full hand-wrapped ... higher production quality----higher stiffness and rigidity, less weight; Place of Origin:Xiamen,ChinaBrand name:YISHUNBIKEModel name:YS-FM049Material:full carbon fiber T700Type:29er MTB Style ...