Very rare Yoshimura exhaust ID help.
 

I got this bike back in 2009ish. Soon after I bought this exhaust. Have never seen anything like it since. The construction is beauty, fit was perfect. The sound, menacing. Baffles are removable.

i tried to contact Yoshimura back then but i couldn't get anyone to ID the model of these pipes. Haven't seen anything like it before or since. I'm certain that their genuine. Any ideas? I wonder if they are some limited production or left over from some obscure race series from the late 90s.
https://cimg6.ibsrv.net/gimg/www.sup...9c6cf6e1f0.jpg
https://cimg9.ibsrv.net/gimg/www.sup...c7f1fda101.jpg
https://cimg8.ibsrv.net/gimg/www.sup...8a3663cb47.jpg
https://cimg9.ibsrv.net/gimg/www.sup...52e9c0a07d.jpg
https://cimg0.ibsrv.net/gimg/www.sup...236c3ead68.jpg

Don't recall seeing those before. @captainchaos ?

I would reach out to Roger Ditchfield, Revolution Racing.. He is probably the only individual that has seen most all the items ever produced for the Superhawk.

Header looks OEM

I second that. With prejudice.

I am going with the consensus, on the OEM header. And depending what the mid pipes are made of ? A set of Yoshi cans cut down, YET the fabricator of the mids has some skill.
Taking closer looks of the welds.. Not bad..
IF i would sport those. Custom build , and not hard on the eye.....

Yes headers were stock. The rest were a solid construction. I never thought of custom fab mid section and a cut down.

If it was a custom fab, the construction was super clean... invisible wells, spotless bends.

You know what, looking at the midpipe, I'm going to have to take a closer look at my RC51... seems too familiar. But my Yosh cans on those are oval.

I can't recall if I've ever seen those before (certainly not in person). They look familiar but then again I'm getting old and it might be from seeing them here previously lol. My guess is they're legit and that they were probably made when the bike first came out (and not for very long). The cans match earlier style Yoshimura exhaust for older bikes. Companies like Two Bros did something similar and brought out an inital round can exhaust as soon as the bike was introduced and later changed to the more familiar oval styles we all know. If you look on Ebay for instance, there's a Japanese seller (MUKEIDOU) who periodically lists rare and obscure exhausts, some of which I've never seen or even heard of before. I'm willing to bet if you could ask him he'd confirm.

Where did you get it from?

good suggestions.
I actually got it off ebay around that time, but from a US seller I think.