How to determine your inner tube size

The correctly sized inner tube will be the size stated on your motorcycle’s tyre. So check out the sidewall of your tyre, note the size (120/70/19 for example) and then find an inner tube of that size. It’s that simple.

However if you can’t get an exact size (for example you’re stuck with a flat tyre and your local bike shop only has a few sizes) then use the conversion chart below and see if there are any similar sizes that’ll work for your rim.