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Amazon.com : JKSPORTS SHIMANOXT M8100 2x12 Speed MTB Full Groupset 26-36T/170MM/175MM/ 45T (with Brake, 175mm 26-36t) : Sports & Outdoors
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Amazon.com: SHIMANO Deore XT BL-M8100/BR-M8120 Disc Brake and Lever - Front, Hydraulic, Post Mount, 4-Piston, Finned Metal Pads, Black : Sports & Outdoors
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