Di2 Internal Frame Junction Box 4 Port Vendor_Dimension and easy-to-use hitch-mounted bike rack

and easy-to-use hitch-mounted bike rack for all types of bikes

keeping shims in place

with a hand-stitched covering and polished silver end caps featuring a laser etched PUBLIC logo

with no cables to get tangled

approximate weight 900g

Di2 Internal Frame Junction Box 4 Port Vendor_Dimension and easy-to-use hitch-mounted bike rackShimano Di2 Frame Junction Box Frame 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