Identifying a pipe

Hi, I just bought a house and up in the rafters of the garage I found a brand-new-looking pipe, a 4:1 system (if I have the terminology right) with a number stamped on a welded bracket: 4MSL-41102.

I have no use for it, but if I could figure out what I've got, it might help me find someone who would want it. Could you help?

Thanks so much! Frank

You have a system that is no longer manufactured (discontinued in '02). It is designed to fit an '84-87 Yamaha FJ1100/1200.

Thanks! Now I've just gotta find a Yamaha owner...

I don't suppose you still have that 4 in 1?

It's been a few years, he could've sold it already