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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Shimano Deore XT BR-M8020 4-Piston Hydraulic Disc Brake - Conte's Bike Shop | Since 1957
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