Genuine AP as supplied by Rover. Left Hand rear backplates are the only type available now for the Mini and have an extra hole, as per the Mini Metros, and take the same plug
AEU1541A which is not supplied. If you have
GWC1101 as fitted to Cooper S etc wheel cylinders you can either drill a small locating hole in the backplate or remove the locating pin from the wheel cylinder. Beware of copies promoted as genuine.
A complete backplate with .75" bore cylinders (
GWC1102) and brakes shoes are available as
21A1060KIT.
This is a safety critical part and therefore only Genuine AP Products original fitment parts are supplied.