Yes we have stock of the Bafang HD1000 motors in 52 volts! It’s available in the 68-73mm & 120mm bottom bracket widths & we have adapter kits available for 92mm pressfit systems.
You can match these to our 17.5 & 21ahr batteries as well as our exclusive 52volt 20ahr custom batteries for smaller or awkward frames. They will run perfectly on a 48volt battery as well & will produce 175nm of Torque with a 52volt battery. We will have these as an ongoing stock item & carry spare controllers & nylon gears etc.