Shimano EW-SD50 Electric Wire Di2 250mm R0 They were developed to provide

They were developed to provide aerodynamic gains without the carbon price tag

The material of the frames is Tr90

Back 825 g

resulting in a 35

Force vector data for analyzing and improving pedal stroke efficiency

Shimano EW-SD50 Electric Wire Di2 250mm R0 They were developed to provideShimano Di2 e tube Wires Specifications Ultegra Di2 wires utilize Shimano's e tube technology; e tube is a two prong system and is NOT cross compatible with Dura Ace 7970 Di2 wiring All e tube wires may be used for internal or external applications Frame grommets for E tube internal wiring compatible frames are sold separately, see Shimano Frame Grommet Kit Electronic Shifter Extra Parts Mfr Claimed Weight TBC