Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=18013 comfort and efficient moisture transport

comfort and efficient moisture transport

or EC (traditional External Cup) available for 1-1/8 inch and tapered steerers

anodized red with 39mm ID and 52mm OD

Vendor Planet bike Manufacture Number 5055 Model Name Happy Hands Handlebar Diamond Joe Grips Category Grips & tape

}RockShox Rear Shock Damper Body/IFP - Bearing Eyelet 55mm Deluxe/Super Deluxe A1-B2 (2017-2020)

Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=18013 comfort and efficient moisture transportShimano Di2 Frame Junction BoxFrame Junction Box connects via SD50 E tube wires to four different points: front derailleur rear derailleur cockpit junction box and battery mount All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com