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8 Comments

  1. BobLighthouse on

    That is a barrel adjuster, you just have to make sure it grips the housing properly.

  2. FeistySchedule4626 on

    The same thing as the one at the derailleur, just with this one you can adjust while you ride.

    For a cleaner look you can remove it if and when you replace the housing.

  3. Morall_tach on

    Some rear derailleurs don’t have barrel adjusters, which is why the inline ones exist. You happen to have both.

  4. Putting an inline barrel adjuster there has another big advantage: it makes it so on a bike with full-length housing you can replace the part of the housing most likely to get gunked up — the rear part — without having to re-wrap your bars. Just replace it from the barrel adjuster back.

  5. Sometimes it’s nice to be able to index the shifting on the fly (while you’re riding your bike) cuz in the end that’s what matters

  6. amiable_ant on

    For some time on a new bike, I couldn’t get the rear indexing right. Finally, I realized my cable disks also had a barrel adjuster, the twisting of which did little for my indexing issue.

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