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Shimano Deore M5100 Groupset Mtb M6000 Mountain Bike Groupset 1x11-speed 11-42t 11-51t M5100 Rear Derailleur Shift Lever - Bicycle Derailleur - AliExpress
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1x12 systems killer! Deore 1x11 drivetrain with 11-51T cassette. Cheap, compatible, great shifting! - YouTube
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Shimano Deore M5100 Groupset Mtb Mountain Bike Groupset 1x11 -speed 170/175 32/30t 11-51t Derailleur - Bicycle Derailleur - AliExpress
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