The Shimano EW-SD300 Di2 E-Tube wire is more compact and provides weight savings vs older models.
The EW-SD300 Di2 wires are compatible with the new Shimano R9200 Dura-Ace 12-Speed Groupsets, Shimano R8100 Ultegra 12-Speed Groupsets and the Shimano R7100 105 12-Speed Groupsets.
PRODUCT CODE: IEWSD300L035 ITEM NUMBER: EW-SD300
