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  1. #1
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    Shimano RD-M510 6-speed derailleur replacement?

    Hi all,
    I am not really good at finding the right parts for bikes. I got this bike for super cheap, and the only thing it needs is a new derailleur. The old derailleur has a code on it thankfully, so hopefully I can find a replacement soon.
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    Could any of these work for me?. Could a derailleur with 9 speeds work with a 6 speed?. Thanks

  2. #2
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    yes. Shimano 6 to 9 speed all have the same derailleur ratio of 1.7

    Pro Tipp: If you don't have a clue visit a bike shop. They do sell derailleurs!

  3. #3
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    Reputation: gmats's Avatar
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    Here's a good read on what Shimano does with their drivetrains. Hope it helps.

    Art's Cyclery Blog ยป Science Behind the Magic | Drivetrain Compatibility

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