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the R9250 Rear Derailleur houses the wireless hardware that communicates with the shift levers, and it's hardwired to the front derailleur and battery, acting as the master link. It’s also the char...
the R9250 Rear Derailleur houses the wireless hardware that communicates with the shift levers, and it's hardwired to the front derailleur and battery, acting as the master link. It’s also the char...