I say get the 32t over the 30t versions as they and the Dura ace have the same gearing from 11-21t so the only difference in gearing will be when your in the final 3 cogs on a super steep climb. I hate how the DA 11-34t not only doesnt have an 18t but it also loses the 16t so you have 2x double tooth jumps in your most used gears. pathetic design and the 34t version from these guys does the same. I'll be putting together a video talking strictly about gearing and who should go with what and why.

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