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Thread: chain size

  1. #1
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    chain size

    I am not sure what size chain to buy. I see chains advertised as 6/7/8 speeds and also as 10 speed plus.

    I have an old road bike. It has 2 chain rings in the front and the cassette has 8 cogs. Does this make it an 8 speed? A 16 speed? I am not really sure which size chain to buy. Thanks.

  2. #2
    Senior Member CACycling's Avatar
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    You need an 8 speed chain.

  3. #3
    Senior Member bluenote157's Avatar
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    you need an 8 speed chain.
    On a similar note.. does anyone know if a 9speed chain will work fine on a 6 speed drivetrain?

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    Senior Member Torchy McFlux's Avatar
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    You need a 7 or 8 speed chain. They'll be 7.1mm wide if it's a SRAM/KMC/Taya/whatever, or 7.4mm wide if it's a Shimano.

  5. #5
    Senior Member Torchy McFlux's Avatar
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    Quote Originally Posted by bluenote157 View Post
    you need an 8 speed chain.
    On a similar note.. does anyone know if a 9speed chain will work fine on a 6 speed drivetrain?
    No, it won't. It will tend to bind and slip.

  6. #6
    Great State of Varmint Panthers007's Avatar
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    Chains marked '8-speed' are designed to work with 5, 6, 7, and 8-speed cassettes/freewheels. 9-speeds are for 9-speeds. Ditto for 10spd - works on 10-speeds.
    How do you keep an idiot in suspense?

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