HD part#53015-05B.
Got mine new for $600 shipped from Manchester Harley. However, there are usually a few used ones on e-bay. Not dirt cheap, but they are lockable and leather-covered, plus look good on the R3R, and nicely clear the turn signals.
The bags came with HD mounting hardware riveted on, so I had to drill out 4 rivets on each bag to remove the softail-specific mounts. FYI: The bags are not identical in volume -- the left one is smaller on the inside, due to whatever asymmetry of the Softail. I will take some pics of the Easy Bracket mounts and angles -- I had to use spacers and longer lower bolts on the left bag to mount the brackets. Other than that, the installation went smoothly.
Now I just need a quick-release sissy bar, and I will be a very happy camper!
DC