I had just successfully fitted a pair of well made single pot rear disc brake with the whole kit supplied by Unique-Power International from Taiwan; basically remove the original drum brake unit, and replace with the kit which than convert the rear brake to disc brake with hand brake's brake shoes fitted inside the hub of the disc.Incidentally for those who use the Copen fore track, the company also manufacture four pot caliper conversion. As I have not tried the front conversion to four pot, hence I cannot comment on it. Those interested can write to Kevin Chan, info@unique-power.com.tw; or google how the system works: unique-power international. George
