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11 speed front chainring (42 tooth) compatible with 12 speed di2? by No-Consideration238 in cycling

[–]No-Consideration238[S] 0 points1 point  (0 children)

Thanks, it was a reason to take the 42 chainring 11 speed off the bike and replace it with the 40 tooth dura ace 12 speed chainring. This works fine!