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Amazon.com : Hiland 26/27.5 Inch Mountain Bike, Shimano 21 Speed MTB Bicycle with High Carbon Steel Frame,Suspension Fork,Dual-Disc Brake, for Adult,Men& Womens Bikes : Sports & Outdoors
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Amazon.com : Hiland Adult/Youth Mountain Bike, Shimano 21 Speed, 26/27.5 Inch Wheels, 15 17 19 Inch Frame Options, Dual-Disc Brake,Multiple Colors for Womens,Mens Bike Bicycle : Sports & Outdoors
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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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First ride review: Shimano XTR M9100 12-speed drivetrain and 4-piston brakes | ENDURO Mountainbike Magazine
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