Stone 110bcd Round Double Chainring 5 bolts for 12S AXS Flattop Chain 12 Speed Road Bike 46 33t 48 33T 48 35T 50 37T 52 39T 54 41T 2x
STONE Road Bike Front Derailleur Extender Adapter Convertor for SHIMANO Di2 105 R7170 R8170 R9250 R8150 FORCE AXS 10/11/12s Adapter Rise Lower Height Bike Chainring Accessories
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