Brompton rear mudguard replacement flap

Excellent item, essential upgrade

My first cycling jacket was permanently stained by the Brompton stripe up the back of it, so if you have an older Brompton I would urge you to fit one of these. If you are a purist who likes originality in your old Brompton and don't like the idea of drilling a hole in your mudguard, console yourself with the fact that you are putting on something that will protect your old mudguard from chips and crack at its tip when you fold it up.