I now have frame caps/bungs available for the watercooled RT models. [/size]These are a simple push-in plastic cap, to cover up the swingarm pivot and brake torque arm holes. See Ebay advert for further details and pictures:
http://www.ebay.co.uk/itm/BMW-R1200RT-LC-Watercooled-models-frame-plugs-bungs-/171750984247?pt=LH_DefaultDomain_3&hash=item27fd280a37
R1200RT LC frame plugs
Re: R1200RT LC frame plugs
Just popped them on. Finishes the frame off nicely. Took the precautions of waxing up the bolts and bits now covered up.