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- E-Tube Wires and Connectors
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Shimano E-Tube wires and connectors 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 wiringAll e-tube wires may be used for internal or external applicationsFrame grommets for E-tube internal-wiring compatible frames are sold separately, see Shimano Frame Grommet Kit Electronic Shifter Extra PartsConnector for E-Tube wires Item SpecificationsFD/Shifter CompatibilityDura-Ace 9070 Di2FD/Shifter CompatibilityShimano Ultegra Di2