New Shimano Deore XT M8100 1x12 12-Speed MTB Full Groupset 30T-36T, 165MM--175MM | eBay
First Review: Shimano XT M8100 and SLX M7100 – presenting Shimano's entry-level 12-speed drivetrains | ENDURO Mountainbike Magazine
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12-Speed Shimano XT Review: Lessons After 2,500 Miles - BIKEPACKING.com