Anybody recognize this 535 catback exhaust?

[ClarkWGriswold]

Pulled this off my 89 535/5 that I am parking and was wondering if anybody recognizes the brand. No markings that I can see anywhere, nice system gave the M30 a good tone.617401617402617403617404

[The Chauffeur]

It looks a lot like a Remus, but I might be wrong...

617440

[e30luv318i]

It’s a stebro I have the same exhaust

https://www.bimmerforums.com/forum/showthread.php?2307207-Need-help-id-ing-Exhaust

[zubbie]

gonna sell it?