Bike Forums - View Single Post - Changing chainring to a “non-traditional” gearing 50/34

09-07-21, 08:54 AM

#13

ThermionicScott

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Quote:

Originally Posted by guapo337

Thanks, this is helpful. The new bike is Shimano 105 (R7000). It appears I could buy a Dura-Ace 42t chainring and it would be compatible, but I'm not 100% sure on that. Any ideas?

Looks like a 39T inner ring is available in that group: https://bike.shimano.com/en-EU/produ.../FC-R7000.html

You'd probably need to be a little more "patient" on upshifts since the ramps and pins on the 50T and 39T wouldn't be synchronized, but coming from older bikes, you know the drill.

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Last edited by ThermionicScott; 09-07-21 at 09:48 AM.

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