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Even up to 40t according to some!
30t wasn’t really necessary for my needs but as they now make it, why not?
Tempted to splash some cash for the R8050 upgrade at this point...Only concern regarding the new Ultegra, will the moving parts (bushings, bearings, springs) wear down faster than DA?
The only reason that 6800 was kinda shit compared to 9000 was that it wouldn’t really pass the test of time.
Note; GS rear derailleur go up to 34t cassette.