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Shimano GRX component series is the first dedicated gravel group w/ 10 & 11 speed options - Bikerumor
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Amazon.com : Shimano GRX ST-RX400 GRX Mechanical Shift Hydraulic STI Lever, 10-Speed, Right Hand : Sports & Outdoors
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Shimano GRX component series is the first dedicated gravel group w/ 10 & 11 speed options - Bikerumor
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