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Dura Ace BR-R9170
5 Large usually is better
Compatible with the following Specialized Bikes:
or other USB-C compatible devices
Shimano Deore Shadow RD-M5100-SGS 1x11 Rear Derailleur Brushes Dura Ace BR-R9170The Shimano Deore RD M5100 is a versatile derailleur option, compatible with 1x11 drivetrain options. The low profile design avoids damage from rocks and debris, so you can have peace of mind while out on the trails. Designed to pair with the Deore CS M5100 11 51t cassette. It can also be used with other wide range 11 speed cassettes. Larger 13t pulleys offer smooth operation, and will reduce wear and tear on the components. Shadow RD+ Technology