Fabian’s Paris-Roubaix Dura-Ace custom derailleur

The whole area is mechanically beautiful. Must be nice to get that kind of attention. Gonna guess it kept the chain from bouncing around like crazy and kept shifting super smooth and precise.




Just a guess.


4 thoughts on “Fabian’s Paris-Roubaix Dura-Ace custom derailleur

  1. Actually the main goal, I believe, is to increase drivetrain efficiency. Higher diameter pulleys mean the chain has to flex less and the pulley can rotate more slowly. Thus you gain a few Watts.

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