Shimano DEORE 11S M5100 4pcs Derailleur Right Shifter Cassette 51T Chain. M5100 11S Right Shifter. M5100 Cassette 42T / 51T. M5100 Rear Derailleur SGS. ．1x11-speed SHIMANO SHADOW RD+ rear derailleur. ．Ride anywhere with smooth and precise HG shifting.
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