The EW-JC130 Y-Split E-Tube Wire from Shimano is a versatile routing cable that offers more wiring options in connecting Di2 batteries to front and rear derailleurs. It's available in three lengths to accommodate frames of varying geometries. This unique routing cable is compatible with Ultegra 6700, 6800, 8000 and Dura-Ace 9000, 9100 generations of Shimano Di2 drivetrains.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which are known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
SS - 250mm/350mm/50mm
Mfg PartNum: IEWJC130SS
SM - 450mm/350mm/50mm
Mfg PartNum: IEWJC130SM
MM - 550mm/550mm/50mm
Mfg PartNum: IEWJC130MM
Wanted to use the the Junction A bar end for a new build and did not want to mount one under the stem, primarily for a cleaner look and the fact my stem was custom painted. This split wire does what it's advertised to to do and does it perfectly. Since the bar end junction box has only 2 ports, the Y-split was needed in order to keep everything hidden.
Do yourself a favor, as I learned the hard way(fault of my own), and get the larger size, as the medium wasn't long enough for my application and internal bar routing. Oh....and get the little Shimano tool for connecting and disconnecting the E-tube wires. Worth every penny!
I added aerobars to my drop bars for a distance event and ran out of ports on even the 5 port junction box A (using single wires). These solved the problem. They function the same as any other Di2 wire.