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New Shimano GRX switches to 12-speed and increases gear range – but sticks to mechanical shifting - BikeRadar
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Shimano GRX RX820 Unstoppable 10-51t Drivetrain Kit - Includes: Shifters, Brakes, Rotors, Crankset, Rear Derailleur, Cassette, and Chain - Two Hoosiers Cyclery, LLC
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