I've heard of that company name before, but have absolute "0" experience with them
so I cannot say anything one way or the other in that regard about quality or reputation. But, of all the bike
models listed in the "application info" the BMW R65 is the biggest and heaviest.
I would therefore posit that regarding the springs and/or shock damping - if they are
tuned to be a good match for the smaller lighter bikes, might be undersprung/underdamped
on the R65, especially as BMWs have somewhat generous "cargo capacity", ie. "load weight".
If you are a larger person, or plan to do alot of riding 2-up, these might not be a good
choice , going purely on what I can see/read in this ebay posting.