• If you want to do this yourself, you’ll need to find or measure the ‘bcd’ aka ‘pcd’ measurement of your crank in order to buy the right replacement ring, a new chain and a chain ‘breaker’ tool to remove unwanted links. Take a look at somewhere like Spa Cycles for TA or Stronglight rings, good quality and loads of options.

    What else do you need to know? Get a bigger chain ring, try it. Maybe a 48t? Spinny is good for your knees, don’t go mad.

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