Another (hopefully different) insurance question - declaring modifications

[Lawrence]

Standard stuff (heated grips / topbox), no difference to Aviva's price, just "tell us as / when you get them so that they're covered".

You'll probably find that they're not covered, if they get damaged in an accident they'll be replaced with standard parts (which probably cost more  :rolleyes ) unless agreed otherwise.

They still need to know though or they won't necessarily pay out in the event of a claim.