The standard recommended spark plug for the Honda Click 125i and older Honda Click 110 is the NGK CPR7EA-9 gapped at 0.9mm or the long life Iridium CPR7EAIX-9.
The genuine Honda part number for this plug is 31917KPH901.
For operating in Extreme Conditions an alternative 'colder' NGK CPR7EA-9 spark plug may be considered.
