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Jul 30, 2023 at 10:41 comment added haferblues I have an ultegra R8000 crank and wanted to install 105er R7000 chain rings. It is technically compatible, but the 3d shape doesn't fit. So it works, but it looks silly, since the 3d shape has a 2mm step between the crank and the chain ring. For me that's a no-go. So I had to order the FC-R8000 Chain ring, which is roughly double the price.
Oct 24, 2020 at 19:35 history answered thelawnet CC BY-SA 4.0