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  • Help me identify my rear mech!
  • peacefulparsnip
    Free Member

    Is there an easy way to tell between a close and wide ratio zee 10spd rear mech?
    Cages and springs look the same.
    Many thanks!

    Posted 9 years ago
    Suggsey
    Free Member

    I would imagine shimano will have a different part number for each…..I have the up to 36 tooth version not the close ratio 28 but only remember it being specs on the label as that.

    Posted 9 years ago
    wukfit
    Free Member

    Up to 36 is the largest (FR), I believe the difference is in the length of hanger not the cage?

    Posted 9 years ago
    Suggsey
    Free Member

    PRODUCT SPECS
    Manufacturer: Shimano
    Mfr Part #: IRDM640SSC
    UPC: 689228305359
    Model: Shimano ZEE RD-M640
    Style: Mountain
    Color: Gray
    Is coding for 28 close range cassette

    PRODUCT SPECS
    Manufacturer: Shimano
    Mfr Part #: IRDM640SSW
    UPC: 689228305328
    Model: Shimano ZEE RD-M640
    Style: Mountain
    Color: Gray
    Is for the wide ratio note the manufacturers part number that should be on it somewhere,

    Posted 9 years ago
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