IIRC Dahon said they no longer have spares for these 33 y.o. bikes, but you could always check with He-who-must-not-be-named-on-this-forum (ThorUSA).
That said there's a huge worldwide following for these bikes - check the Dahon owner's Facebook page (that's 'Dahon' - the official company Facebook page is 'Dahon Folding Bikes'). Owners are always showing off restored or hot-rodded Classics. Someone might have a stash of parts, or could be 3D printing replacements.
Top recommended mod: aluminum rims and Marathon tires.
