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Your complete guide to Shimano mountain bike drivetrains - Tourney, Altus, Acera, Alivio, Deore, SLX, XT, XTR 12 speed | off-road.cc
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12-Speed for All - Shimano's All-New DEORE Drivetrain and Brakes - Mountain Bike Press Release - Vital MTB
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Amazon.com : Shimano Acera M360 7 and 8-Speed Rear Derailleur with SmartCage, Black : Rear Bike Derailleurs : Sports & Outdoors
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