
I bought them directly from GPR, or rather the importer. I rang them to ask about a replacement Carbonox finish one and the guy upsold me; he offered me the £360 price straight off the bat. His name was Arthur.
Here's the website: https://www.gpr-motorcycle-exhausts.co.uk/
I'll post a pic of them when they're fitted, but it won't be for a week or two as we're off to Sudden Impact for paint repair and a polish on Monday.