You can find all the replacement parts and accessories you need for your Brompton bike at Escapa, such as the Pair of Roller Wheels for the Brompton G Line Luggage Rack, 80mm, which mount on the rear of the luggage rack on a Brompton G Line or Electric G Line.
They are mounted on the rear of the rack on a Brompton G Line or Electric G Line.
They provide great stability when the rear section is folded and allow you to drag the bike.