this shouldn't make any difference at all to the bike insurance …you have shot yourself in the foot by mentioning it ..so off course they will charge ..you have quite innocently asked them to do that by telling them
Exactly my thinking.
Mine has the factory fitted BMW version.
i add my reg, make and model including year.
Its up to the insurance company to do the checks.
I aint gonna mention the "Turbo nutty buster 3000" ive had fitted to make the bike do 300mph am i?
by the way thats just an example, i dont really have it fitted.... i made it up