I'd give these a try first: http://www.heed.com.pl/index.php/en/
Also available on ebay: http://www.ebay.com/itm/REAR-ENGINE-GUARD-CRASH-BARS-HEED-BMW-R-1200-RT-05-13-black-/172514698926?fits=Make%3ABMW%7CModel%3AR1200RT&hash=item282aad66ae:g:ZO4AAOSwo0JWIXRK&vxp=mtr
I have a set of these. Also, bought a set of pannier protectors.
I like them, good quality workmanship, most screws are stainless,
in a few words, as good of a quality as you can find, for a good
price. Very well packaged, took some time to unwrap them...So all
is good, except: if they ship you the wrong model/year, you are stuck with it.
Shipping to return for exchange is higher than you paid for them! My rear bars
are for a different model/year. i wish i knew what model, would give them for free!