Genuine Shimano E-TUBE SD50 electric wire, 850 mm, for connecting Di2 components. Its slim, waterproof connector routes easily inside frames and handlebars or along the outside.

• Model: Shimano EW-SD50, 850 mm
• Carries power and signals between E-TUBE Di2 components
• Compact waterproof SD50 plug at both ends
• Internal or external routing
• Colour: black
• Installed with Shimano TL-EW02 plug tool