Shimano Di2 E-Tube EW-SD300 electric cable

Optimise the connectivity of your electronic drivetrain with the Shimano Di2 E-Tube EW-SD300 cable, designed for the latest generation of 12-speed road groupsets. This cable transmits data and power between the various Di2 components (derailleurs, battery, shifters), ensuring smooth and ultra-precise operation.

Thanks to its slimmer and more compact design compared to the previous generation (EW-SD50), it facilitates internal routing within modern frames and enhances the bike’s overall aesthetics. Its reduced diameter (approximately 2.4 mm) allows for a more discreet routing whilst maintaining excellent reliability.

Available in several lengths (from 150 mm to approximately 1,600 mm), it adapts to all configurations, whether connecting the internal battery to the rear derailleur or linking the various cockpit components. 

We advise you to err on the side of caution when calculating the length – you can never have too much...

Key features

• Official Shimano E E-Tube SD300 cable (new generation)
• Compatible with 12-speed Di2 (Dura-Ace, Ultegra, 105)
• Reliable transmission of signals and power
• Slim, compact design for a modern, integrated look
• Waterproof and secure connectors
• Available in a range of lengths

Technical specifications

- Wiring harness for Shimano DI2 12-speed road groupset
- Compatible with BT-DN300 battery
- Diameter 2.4mm
- Plug diameter 2.45mm
- Lengths: 300/400/500/600/800/900/1000/1200mm
- Part number Shimano: EW-SD300
- Brand Shimano