Where can I buy a mudflap?
There’s no shortage of retro-fit mudguard flaps on the market, including leather examples made by Brooks, Dia Compe and Gilles Berthoud, alongside those in more conventional (and lighter, once wet) moulded plastic and rubber such as the SKS Spoiler. There are even custom-made flaps, which may be obtained online from outlets including topflaps. co.uk and rawmudflap.uk. If you or your LBS fancy making one, I recommend builder’s DPC (damp proof course) plastic strip.
Technical Cycle magazine