My R65 Cafe Racer originally had an Armours set of standard looking stainless silencers.
There were good, probably a little more fruity than BMW originals, but ultimately not the look I wanted for the Cafe Racer, so I sold them on.
They were on the bike when I first completed it. See the link above.
It seems that virtually every exhaust they stock, you can order in Stainless or Chrome plated. I would not sniff at the Chrome plated examples (both my bikes run chrome plated exhausts currently), as the plating is thick and of high quality.
I would not be so keen on the headers though, as my bike originally also had stainless steel headers, but I could never get them to seat correctly and always had an air leak on the left hand cylinder - left header probably cut too short. The headers were unmarked so might not even have been supplied by them, but it is too much of a coincidence. Since they were fitted by a previous owner I did not have much recourse.
However they are competively priced and otherwise good quality. I would give them a go, but be ready to send back any headers if there were fit issues. Forwarned is forarmed.
They also do a 2 into 1 for the larger airheads
Cheers
Steve H