• Whut?

    Thanks marcola.

    I'm just trying to work out how the hell the kmc is only £5-6 while all the other high end chains are £30-50.
    I'm needing a track chain for a bike which will be ridden with a chain punishing 100 gear inches (or there abouts). Is the z510 still the prefered chice for herne hill?

    Does not depend on the gear ratio. More on the size of front chainwheel and crank length.
    This decides by what factor your power is multiplied...
    Connecting skills also play a role.

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