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Shimano Dura-Ace Di2 RD-R9150 Rear Derailleur

Shimano Dura-Ace Di2 RD-R9150 Rear Derailleur

Shimano's RD-R9150 Dura Ace Di2 Rear Derailleur uses a low-profile Shadow design that keeps it more closely tucked beneath the cassette for more stable shifting and reduced likelihood of being damaged in a crash.

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