DEORE XT M8000 Series MTB Cassette Sprocket. SHIMANO DEORE XT CS-M8000 Cassette Sprocket 11-speed 11-40T. SHIMANO DEORE XT RD-M8000 GS / SGS. Wide range 11–40T for excellent climbing performance. Tooth Count: 11–13–15–17–19–21–24–27–31–35–40T.
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