... : 461,481,502,522,543 2. carbon TT frame 3. full carbon fiber material 4.fashion design Model:FM- ... R833Name:Time trial carbon fiber frame setSize:461,481,502,522,543Derailleur System:Shimano DI2 compatibleBB ... Lin Tel: 86-189-6584-0856Skype: emilylin0725 full carbon fiber TT frame set