9 Speed MTB Shifters + Cassette, 10 Speed Road Rear Deraileur....??- Mtbr.com
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  1. #1
    Spice
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    9 Speed MTB Shifters + Cassette, 10 Speed Road Rear Deraileur....??

    Hi guys.

    As the title says, will a 10speed road RD (SRAM Rival) work with 9speed cassette and shifters ( sram X9/pg980) ?? Has anyone had experience with this?

    I know lots of similar questions have been posted, but I couldnt find a definitive answer for the road deraileur.

    In case you're wondering why, I've gone 1x9 coming from 3x9, so have a long cage X9 which I can swap with a Road Rival Deraileur lying around (has 28t capacity, I only need 23 if anyone asks!) as long as it works!

    Cheers

    Joe

  2. #2
    Former Bike Wrench
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    A 10 speed SRAM road derailleur WILL NOT work with 9 speed SRAM shifters and cassette.

    A 10 speed Shimano road derailleur WILL work with 9 speed Shimano shifters and cassette.

  3. #3
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by mtnbiker72 View Post
    A 10 speed SRAM road derailleur WILL NOT work with 9 speed SRAM shifters and cassette.

    A 10 speed Shimano ROAD derailleur WILL work with 9 speed Shimano shifters and cassette.
    Emphasizing "road" in 10-sp Shimano ROAD rear derailleur.
    mtbtires.com
    The trouble with common sense is it is no longer common

  4. #4
    Spice
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    Cheers! It'd be much simpler if they kept the leverage ratio's the same wouldn't it!

  5. #5
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    So does anyone know what the exact ratio Shimano uses on their Dyna Sys stuff? Is it truly 1:1? I am considering using a 10-speed Shimano rear derailluer with a SRAM 9-speed 1:1 shifter.

  6. #6
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by Stevoo View Post
    So does anyone know what the exact ratio Shimano uses on their Dyna Sys stuff? Is it truly 1:1? I am considering using a 10-speed Shimano rear derailluer with a SRAM 9-speed 1:1 shifter.
    No. And SRAM's "1:1" ratio is not exactly 1:1 either.
    mtbtires.com
    The trouble with common sense is it is no longer common

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