Any suggestions....

metal spinning - YouTube

The exhaust you mentioned sounds like brushed stainless. A friend had some custom pipes like that, sweet!

No Sir, I asked the owner of the bike. He & is slightly drunk buddy said they both were sitting around a fire having a few beers and "scrubbing" the exhaust....which they both said was chrome....If I go out to the get together next spring in Troy MT. pretty sure I will see him again...

Interesting video. Have a neighbor with a lathe, Leroy, who just turned 78 still maintains his 2 airplanes and is always looking for different ways to make things. He very well may be interested in trying this out....

Thank You...