It might be an insurance issue... I'm thinking about my mods and if bike will be stolen..how should I explainall my mods with more than 10mm wider pistons and other goodies? My registration say 736 cm3, 49kW.
Edit: It is possible to change the registration, come clean and specify the real status. Then change the insurance that will get another price tag
I think it was CycleX that had 836, 900 and 1000cc badges