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Amazon.com: Shimano GRX ST-RX815, GRX Di2 Shift Hydraulic STI Lever, 2-Speed, Left Hand : Everything Else
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Amazon.com : Shimano GRX ST-RX815 11-Speed Di2 Right Drop-Bar Shifter/Hydraulic Brake Lever without hose or caliper : Sports & Outdoors
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Shimano GRX ST-RX815 11-Speed Di2 Right Drop-Bar Shifter/Hydraulic Brake Lever with BR-RX810 Flat Mount Caliper, Pre-Bled 1700mm Hose
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