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SHIMANO GRX RX815 DI2 Road and off road Gravel Bicycles bike derailleur Electronic Kit GROUPSET 1X11S 11 SPEED|Bicycle Derailleur| - AliExpress
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Shimano's electric GRX Di2 RX800 11-speed gravel groupset: full weights, prices and specs | off-road.cc
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Amazon.com: Shimano GRX RD-RX815 Rear Derailleur - 11-Speed, Long Cage, Black, With Clutch, Di2, For 1x and 2x : Everything Else
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shimano Di2 GRX RX815 11 Speed RX815 RX817 Groupset Road Bike Groupset 170/172.5mm 40/42T Bicycle Group Set 11 speed|Bicycle Derailleur| - AliExpress
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