Shimano E-Tube Di2 External Junction B Box Color:Black Bring your worn out Sidi

Bring your worn out Sidi shoes back to life with new Sidi SRS Soles for Newer Spider Carbon shoes

Includes the 530-2 adaptors for aligning 1" and 1-1/8" pressed headsets

and titanium

30mm spindle for Easton Cinch cranks

Simply insert the specially sized jaws into the masterlink

Shimano E-Tube Di2 External Junction B Box Color:Black Bring your worn out SidiShimano E Tube Di2 External Junction B Box The Shimano Di2 SM JC40 is designed to connect SD50 E tube wires along four points; front derailleur, rear derailleur, cockpit junction and battery mount. The B Box is used to split the main wire from Junction A to the front and rear derailleurs. It can also be used to connect a seatpost mounted battery to the system. Specifically designed for externally mounted systems and mounts underneath bottom bracket