Shimano has added a new front derailleur to the 105 5800 groupset and it looks like a straight piece of trickle-down from Dura-Ace R9100 and Ultegra R8000. Could this even be a preview of an ...
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Shimano’s new Tiagra R4000 is a big upgrade for entry-level road bikes, with one painful catch
Tiagra is now Shimano’s #2 mechanical option behind 105. Here’s what R4000 includes, what it costs, and who it leaves behind.
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