Topic: Is this a original Yoshi pipe?

[bert1]

Been around motorcycles for a while considering I'm not even 20 years old. Just bought my first cb, a 75 cb550 as a winter build. It doesn't have a tank, carbs, headlight, headers, etc. so I won't feel bad chopping it up. I came across someone who used to race decades ago selling parts, and he has headers which may or may not be original Yoshimura. I know they're rare and would be nice touch. They have heavy corrosion and the originals were made of thin steel, so that may be a good sign..? Can someone help identify these?

[Shtonecb500]

I wanted that parts lot but its too far from me, I think its a repop yoshi pipe but the other stuff looks fun.

[Stev-o]

Highly doubt it is an original.  Yoshi pipes that I have seen are rounded and have less of a bend...

[Nurse Julie]

I have an original 1970's Yoshi on my 550/4 Mongrel and the bend from the bottom of the headers to the pipe is nowhere near as acute as shown in the photo.

[bert1]

Thanks for the input everyone, does anyone have a blueprint for the repop style (or similar 4-1) headers? I have lots of spare tubing laying around so I may be able to weld a header together instead of coughing up $300 for a new one.

[Stev-o]

I have an original 1970's Yoshi on my 550/4 Mongrel and the bend from the bottom of the headers to the pipe is nowhere near as acute as shown in the photo.

Hi Nurse Julie....the question of a pipe being a Yoshi comes up from time to time.  Would you consider posting a pic of yours in the Exhaust Photo Reference Library...

http://forums.sohc4.net/index.php/topic,97959.200.html

[Tim2005]

That looks quite like a Yoshima pipe to me, rather than a Yoshimura.  Both are rare, and both are unusual to see chromed

[bert1]

That looks quite like a Yoshima pipe to me, rather than a Yoshimura.  Both are rare, and both are unusual to see chromed

Shoot you may be right seems as if I can't read because that's what the lister said it might be, not a yoshimura

[Nurse Julie]

I have an original 1970's Yoshi on my 550/4 Mongrel and the bend from the bottom of the headers to the pipe is nowhere near as acute as shown in the photo.

Hi Nurse Julie....the question of a pipe being a Yoshi comes up from time to time.  Would you consider posting a pic of yours in the Exhaust Photo Reference Library...

http://forums.sohc4.net/index.php/topic,97959.200.html

Will do 👍👍👍

[Don R]

 Weren't there hand bent Yoshimura pipes early and later on they made some mandrel bent pipes? There are a ton of Yoshimura stickers on ebay, I'm surprised most headers don't have one. L0L!