Features:

Ultegra Di2 uses a fully removable individual cable system from the battery indicator junction box enabling fine tuning with the correct cable length to each component for easy and tidy fitment

EW-SD50 wires are required to connect the junction (either SM-JC40 external or SM-JC41 internal to the rear mech, front mech, battery and to the handlebar battery indicator junction box

EW-SD50 individual wires are available in varying lengths, there is no need (or facility) to cut these cables

Reliable and secure water resistant connector

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Shimano Di2 EW-SD50 Electric Wire
Available in lengths from 150 to 1600 mm, the SD50 E-TUBE wire from Shimano transmits interactive signals and provides power to E-TUBE DI2 drivetrains. With a compact, waterproof connector, it can be easily routed internally in handlebars and frames thanks to its "plug & gap" connection.
Features - Shimano Di2 EW-SD50
Newly developed thin electronic cable and port
Two core wires
Waterproof
Not with the Dura Ace Di2 7970 (four cores) compatible!

Compatibility
Dura Ace Di2 9070
Dura Ace Di2 R9150
Ultegra Di2 6770
Ultegra Di2 6870
Ultegra Di2 R8050
GRX Di2 RX815
Alfine / Nexus Di2
XTR Di2 M9050
XT Di2 M8050

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Shimano Di2 EW-SD300-I Electric Wire
Available in lengths from 150 to 1600 mm, the SD300-I E-TUBE wire for internal routing from Shimano transmits interactive signals and provides power to E-TUBE DI2 drivetrains. With a compact, waterproof connector, it can be easily routed internally in handlebars and frames thanks to its "plug & gap" connection.
Features - Shimano Di2 EW-SD300-I
With cable tie type for built-in cable routing
Newly developed thin electronic cable and port
Two core wires
Waterproof
Not with the Dura Ace Di2 7970 (four cores) compatible!

Compatibility
Dura Ace Di2 R9250
Ultegra Di2 R8150
105 Di2 R7150
Alfine Di2 with MU-UR510
Nexus Di2 Inter-8 with MU-UR510

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