Shimano's electric wire cables for Di2 groupsets.

Length Guide for typical internal Di2 setup

• Shifters to Junction A (stem): 350-500mm x2
• Junction A to Junction B (internal): 1200mm
• Front Derailleur to Junction B: 350-500mm
• Rear Derailleur to Junction B: 750mm
• Internal Battery (seatpost) to Junction B: 750mm

Length Guide for Handlebar Junction setup 

• Shifter to Handlebar Junction A: 350mm
• Shifter to Shifter: 750mm
• Shifter to Junction B (internal): 1200mm
• Front Derailleur to Junction B: 350-500mm
• Rear Derailleur to Junction B: 750mm
• Internal Battery (seatpost) to Junction B: 750mm

Please note this guide is intended to be used as reference only. Required cable lengths will differ depending on setup and frame size.

Specifications
For internal wire routing

Mfr Claimed Weight
TBC