So, my very first bike was a 1991 GS500E that came to me with a Yoshimura muffler. I initially thought it was just some kind of bolt-on can, but later realized that it was essentially a one-piece system, as there was no easy way to remove the muffler from the pipe. The header didn't have those parallel downpipes with the little bridge, as found on a stock system-- they were sort of angled to meet, and joined under the bike. It was steel, and finished in black paint, and the muffler itself was a long, round, fairly narrow aluminum Yoshimura unit.
It's by far the best-sounding exhaust I've ever heard on one of these bikes.
I read somewhere (a few years later) that Yoshi briefly produced a full exhaust for the GS, and discontinued it after realizing there wasn't a huge market for hot-rodding these. But that was ten years ago, and now I can't find any information at all on this short-lived muffler. Any searches for Yoshi pipes for the GS500 turn up polished stainless tri-oval slip-ons.
Does anyone know about this thing? Anyone have a video of it running?
my last bike had one, it had a black can. but i think ive seen chrome ones as well. from what I've heard/been told by the PO, that particular full system was discontinued in 94. I also heard it made changing your oil a pain, because the filter couldnt come out, youd have to remove the exhaust, or unbolt it slightly and then tilt it. I think theres a video or thread about the topic, I'll see if i can dig it up.
Edit: found the video, it was the oil change how to, skip to 9:14 aftermarket woes. I might have a video of mine running, but I'm not too sure, I'll have to look for it.
https://www.youtube.com/watch?v=a0qaR37f00w