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Chainring set 2-speed ROUND AERO for Shimano 110 BCD 4 holes Asymmetric Dura-Ace R9100, Ultegra R8000, 105 R7000 (11 speed)
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Amazon.com : JKSPORTS OEM ShimanoUltegra R8000 Groupset 12-25T 50x34/52-36/53-39T 165/170/172.5/175mm (170MM, 50-34T) : Sports & Outdoors
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