I didn't know that chrome was ever an option on the 1150 (it is on the 1200).
The drill and polish mop is a long method (and as said messy).
Quickest way I find on badly discoloured pipes is one of those emery paper 'flap' wheels and a drill (fine grade emery).
Then use 600 grit wet & dry, followed by 1200 grit. Wrap the wet & dry around the pipe and use a (vaguely familiar but I can't think why
) motion up and down.
Solvol Autosol is a good enough polishing compound. Get some steel wool, impregnate the steel wool with the paste and repeat the aforementioned 'fist' action.
The flap wheel will leave tiny grazes in the surface. You need to polish these out with the wet & dry and the Solvol/steel wool.
These are from an old /7 before and after.
On my Adv, I just use steel wool and Solvol. A couple of times a year is enough to stop them going too far down the "brown road" depending on how much it's exposed to road crud (especially winter use).
Like anything prevention is better than cure, leave them go too far and you'll have a bigger job in the future.
These are two years old and 24,000 miles. Took me about 15 minutes on each side.
Don't be surprised if they start to go 'gold' again as soon as you fire the engine up.
Don't bother polishing the pipes further back. As has been said elsewhere, Wonder Wheels ali wheel cleaner brushed onto the pale gold further back on the exhausts is the easiest way to remove that. Use it when you are washing the bike but make sure you hose it off thoroughly. It's very acidic.
