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  1. #1
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    Very specific Q : compatibility between RD-6400 & RD-7400 pulley plate / cages

    Are they compatible ? I'm looking to buy a busted Shimano 600 RD w/ a missing outer plate and I have and old 7400 outer plate not being used in my box... more precisely both models are RD-6401 (non aero) and RD-7400....

    Thanks in advance,,,
    Last edited by bloom87; 03-10-13 at 05:11 PM.

  2. #2
    Senior Member IthaDan's Avatar
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    I have like 3 6401 RDs, be happy to measure c-t-c on the pulley bolts. With that you should have a pretty good sense of it.

    Just give me the sign.

    Shimano : Click :: Campy :: Snap :: SRAM : Bang

  3. #3
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    7400 pretty short @ 47mm (hole to hole, center to center)

    thanks by the way

  4. #4
    Senior Member IthaDan's Avatar
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    Don't let the fractions of milimeters fool you, I'd say they're all 47mm, the error is in my measuring more than anything else. I don't think shimano would make them less than 1mm off of each other.

    6401:


    While I was at it, I picked up some other generations of 600 RDs.
    6400:


    6207:


    So, yes, it'll bolt up, whether the inner cage will need a little tweaking is TBD.

    Shimano : Click :: Campy :: Snap :: SRAM : Bang

  5. #5
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    thanks a lot. unfortunately someone just sniped the deal off ebay from me... ahahah !

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