I know very little about bikes but have just changed my gearing to 40 single on the front and a 11-28 on the back of my Mountain Bike . What would be the right chain length to get please ?

  • Park tools has a step-by-step of Sheldon Brown's rule-of-thumb: parktool.com/blog/repair-help/…
    – DavidW
    Jul 10 '19 at 13:13
  • Chains come in one length and are cut down to fit specific bikes. Chainstay length as well as chainring and sprocket size determine the correct chain length. Jul 10 '19 at 13:28
  • OOH thanks I'll have to study that Jul 10 '19 at 13:28

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