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This morning I was following another cyclist in the traffic. He had a road bike with v-brakes. And the brake had a strange cable mount, and I can not realize what is this and what it is for. Had no luck googling it (since I don't know what to google), so here's the image: enter image description here What is this red thing?

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They're called Travel Agents and are used to change the cable pull of a brake lever so you can mix and match brake styles.

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  • Thanks for the answer and the link - there's lots of interesting stuff
    – k102
    Jul 7 '17 at 11:13
  • This is a more detailed explanation on how they work.
    – Batman
    Jul 7 '17 at 11:39
  • It's pretty simple, one cable along the small wheel and one along the big wheel. Then it's simple lever action to explain the effect on the brake pull. Jul 7 '17 at 11:56

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