Shimano Ultegra Di2 7x8mm Grommet for Intermal Routing (4-Pieces)
If you have internal routing, you can cleanly run your Ultegra Di2 wires with these rubber Grommets. They come in packs of four and are available in a 6mm round profile or a 7 x 8mm oval profile to match most frame's internal openings. Confused about how to build your Di2 Kit? Read our Learn Article.