Shimano EW-SD50 Di2 E-Tube Wire, 750mm Bike Accessories_Electronic Shifting Our methodology for creating every

Our methodology for creating every race bike involves rigorous simulated modeling

Cassette: Shimano M8000 11-40t

Tough & durable Aluminum casing

while the durable cold-running compound stops heat build up

Stainless steel back plate

Shimano EW-SD50 Di2 E-Tube Wire, 750mm Bike Accessories_Electronic Shifting Our methodology for creating everyShimano E Tube wires and connectors Frame grommets for E tube internal wiring compatible frames are sold separately, see Shimano Frame Grommet Kit Electronic Shifter Extra Parts 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