The Shimano EW-SD300-I Electric Wire is a compact internal-routing cable designed for compatible Shimano Di2 electronic shifting systems. It supports reliable signal and power transmission between connected Di2 components while helping maintain a clean and professional bicycle setup.

Its slim and lightweight SD300 design makes it easier to route inside compatible bicycle frames, reducing visible cable clutter and improving overall cable management. The included wire holder helps keep the cable secure and organized during installation.

Key Features

• Model: EW-SD300-I

• Shimano E-Tube electric wire

• Designed for internal cable routing

• Compact and lightweight construction

• Supports signal and power transmission

• Helps create a clean Di2 setup

• Includes wire holder

• Suitable for compatible Shimano Di2 systems

Ideal for road bikes, MTB, and other compatible electronic drivetrains, the Shimano EW-SD300-I is a practical choice for replacements, upgrades, and custom Di2 installations requiring neat internal wiring and dependable connectivity.