Shimano EW90-A Di2 Cockpit Junction Box 3-Port/ not for Flight Deck Model=110 Asymmetrical BCD Chainrings for Shimano GRX and Park riding

and Park riding

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Shimano EW90-A Di2 Cockpit Junction Box 3-Port/ not for Flight Deck Model=110 Asymmetrical BCD Chainrings for Shimano GRX and Park ridingShimano EW90 A Di2 Cockpit Junction Box 3 Port not for Flight Deck. Shimano 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