RYET Aero Road Bike Chainring 50-34T 52-36T 54-40T for Shiman Dura-Ace R9200 Ultegra R8100 105 R7100 12-Speed 2x Groupsets with

RYET Aero Road Bike Chainring 50-34T 52-36T 54-40T for Shiman Dura-Ace R9200 Ultegra R8100 105 R7100 12-Speed 2x Groupsets with

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