Quote:
Originally Posted by 604CEFIRO
Does anyone know if the Ultegra Di2 Upgrade Kit would fit the 105 crank and cassette?
The upgrade kit only includes the shifters, derailleurs, wiring, and electronics.
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Yeah as mentioned above shimano may say some parts aren't compatible but you can always make it work. Only catch is that it may not work 100% as well as it was intended.
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