Some sound advice on here, but I really hope that you have a good independent witness to the incident.
If your premium does go up because of this and you decide to 'Shop around' as has been mentioned, your new insurance company will ask if you had had any accidents or claims in the last five years, and you are now back to square one as far as your insurance costs go.
I personally would report it to the police just to log the incident and offer the police your insurance details.
Then get in contact with the truck company ASAP, I assume you have the registration of the truck, the drivers name and the place and time that the incident took place. Ask them if they want to settle personally without involving insurance companies but let them know your have informed the police of the incident and that the police have your insurance details and they are awaiting instruction from you. If they agree that privately settling would be the best option for them and of course it would be, (They don't want fleet insurance going up or a driver possibly being prosecuted for careless driving or driving without due care and attention) Tell them your bank details and say that you want the money deposited by direct transfer to you account within 24 hours or you will let your insurance company and the police deal with it.
Do a quick ball park of what you estimate the material cost to be, be realistic, the bulbs and cans of paint cost, as do the decals for the fairing, they are not cheap, then double it for you inconvenience and time.
I'm sure you have a damaged brake line there, think you will have to put on a new set of 'Colour Coded Stainless' lines.