Ultegra Di2 wires utilize Shimano's e-tube technology 150mm E-tube Two-prong system is NOT cross compatible w/ Dura-Ace 7970 Di2 wiring For use with Dura-Ace 9070, Ultegra 6770 & Alfine Di2…
Shimano spacers for use with various Shimano cassettes. Goes on freehub body behind 10-Speed cassette Not required when using a 10-Speed Shimano cassette with 13/14/15/16-tooth small cog
Shimano E-Tube wires 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…