Shimano XT CS-M771 10-Speed 13t 2nd Position Cog for 11-32/36t Cassette (2nd version replaces Y1YR13000). Shimano XT CS-M771 10-Speed Cassette Cogs
bicycle pedal smoothness-Shimano XT CS-M771 10-Speed 13t 2nd Position Cog 11-32/36t Cassette 2nd version replaces Y1YR13000
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