Shimano Ultegra Di2 RD-R8050 Rear Derailleur


Shimano’s refinements to the latest Ultegra Di2 group are truly remarkable, and while we always fancy a full Dura-Ace build, we’d be hard pressed to decipher a difference in performance. That makes sense since Ultegra gets Dura Ace trickle down technology, and for rear derailleurs, the RD-R8050…

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