Shimano EW90-A Di2 Cockpit Junction Box 3-Port/ not for Flight Deck MFPN=HBMHN but protrusion through rim is

but protrusion through rim is the same as a 12mm DT nipple)

Model Racer M Brompton Wheel Front Reach 47-57mm Color Pewter Weight 194g

The ultra-reliable freehub system transfers the highest pedaling loads resulting in direct power transmission

model SB20 diameter 31

10 traction pins per side

Shimano EW90-A Di2 Cockpit Junction Box 3-Port/ not for Flight Deck MFPN=HBMHN but protrusion through rim isShimano Di2 Junction BoxAll 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