Shimano recently updated its compatibility chart. In regards to the latest generation of calipers shipping with 12-speed groupsets (i.e. BR-R9270, BR-R8170, BR-R7170), the previous generation Ultegra, ...
Why are the rollers larger? Is it to get more “grip” on the 10-tooth cog? Ultimately, what matters to me is this (related to question 1): Is the roll-out/gear inches of a 12-speed SRAM the same as a ...
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