Any one used these Champion spark plugs, are they any good? https://www.ebay.co.uk/itm/Triumph-...387461?hash=item1ea2164585:g:6P8AAOSwIjJZSTRf
On second thoughts, just found these https://www.amazon.co.uk/NGK-4548-CR9EK-Spark-Plugs/dp/B000CSEZ42