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LTWOO MTB Bike 9V 10V 11V 12V Shifter Trigger Derailleurs 1X9 1x10 1X11 1X12 1X13 Speed Shift Groupset Compatible SRAM SHIMANO|Bicycle Derailleur| - AliExpress
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Rotor's 13 speed 1x13 groupset launches: Prices, weights, availability and everything else you need to know | road.cc
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