The Shimano EW-SD300-I Electric Wire is specifically engineered for internal routing within bike frames, providing a streamlined and professional appearance for modern electronic shifting systems.

Designed for Advanced Di2 Systems: This power cable is developed for use with Shimano's latest Dura-Ace and Ultegra Di2 12-speed road derailleurs and the MU-UR510 hub gear motor unit, ensuring precise and efficient power transmission.

Compact and Lightweight Design: The EW-SD300-I wire is slimmer and lighter than previous iterations, making it ideal for bikes with limited internal routing space while maintaining robust performance.

Reliable Connectivity: Built to deliver consistent and dependable connections, this wire ensures optimal communication between components, enabling the seamless shifting performance Shimano Di2 is known for.

Whether used in road bikes or advanced hub gear systems, the EW-SD300-I is a crucial component for achieving a clean, integrated and high-performance electronic shifting setup.