Shimano Electric Cable - EW-SD300

The EW-SD300-I cable transmits electronic signals and power between the components of a Shimano Di2 electronic shifting system, enabling communication for shifting and other electronic functions.

This cable is designed for newer Shimano Di2 systems that use the slim E-tube connectors. It may not be compatible with older Di2 generations that used different connector types.

The 1200mm length is suitable for many standard frame sizes and handlebar configurations. It's recommended to measure your existing cable run or consult a bicycle mechanic to ensure this length is appropriate for your specific bike setup.

No, the EW-SD300-I cable is a fixed-length component with specific connectors on each end. Cutting the cable will damage the internal wiring and render it unusable. If you need a different length, select a pre-made cable of the required size.

The durable outer finish helps protect the cable from wear caused by rubbing against the bicycle frame, exposure to weather elements, and the repeated movement of handlebars.

Other lengths of the Shimano EW-SD300 E-tube electric wire are available separately. You can find them by searching for 'Shimano Di2 EW-SD300' with the desired length, such as 750mm, 1000mm, or 200mm.

Check that all EW-SD300-I cable connections are secure and fully seated at both ends (shifters, derailleurs, battery). Inspect the cable for any visible damage or kinks.

Consult your Shimano Di2 system's manual for specific error code meanings. Often, an error indicates a connection issue or a component malfunction that may require cable reseating or component inspection.

Ensure the cable is not routed too tightly or over any sharp edges within the frame. Use appropriate frame routing guides and avoid kinking the cable. The EW-SD300 is designed for smooth routing, so excessive stiffness may indicate a problem with the installation or the cable itself.