400/500/600/1000/1200mm
Shimano's 12-speed road generation requires a new wired connection from the battery to power the derailleurs. The standard is therefore becoming SD300.
A former racer with a keen eye for equipment
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...
- 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
| Specification | EW-SD300 | EW-SD50 |
|---|---|---|
| Generation | 12 speeds | 11-speed |
| Diameter | Thinner | Thicker |
| Compatibility | Recent Di2 | Older Di2 |
| Integration | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ |
| Connectors | New standard | Old standard |
Frequently asked questions
Le EW-SD300 est plus fin, plus léger et uniquement compatible avec les groupes Di2 12 vitesses. Les connecteurs sont différents et non interchangeables.
Non, les anciens groupes utilisent le standard EW-SD50.
Cela dépend du montage (cadre, routage interne/externe). Il est conseillé de mesurer précisément ou de suivre les recommandations constructeur.
Oui, mais il est recommandé d’utiliser l’outil Shimano TL-EW300 pour éviter d’endommager les connecteurs.
Our team suggests
You may also like
We value your opinion
Based on 73 reviews
Not used yet (Translated review)
Very good (Translated review)
in accordance with what I expected. (Translated review)
Top (Translated review)
Not served yet (Translated review)
Not used yet, in line with what I expected (Translated review)
Replacement of a slightly damaged cable without issues (Translated review)
Very good but maybe a bit expensive for a cable (Translated review)
Ok (Translated review)
Di2 cable ordered to update the firmware of the Ultegra shifters, to be handled with care as the diameter is small using the appropriate tool (Translated review)
Other products
To discover