B pipe ID

[yamahaulass]

Did my searches and from what I gather all 650 chambers are stamped. True or no? I picked up a sn today for 2 bones with a ton of am parts. B pipe chamber looks to be 701. But can't find a lot of info on identifying

 

[dose]

Post a pic
Most here could tell you what you have

 

[yamahaulass]

confident it's not a 650 chamber based on diameter and weld location vs the few pictures I've seen of 650 chambers. Educate me please

 

[Yami-Rider]

Looks like an old style 701 mod pipe.

 

[jonolove]

Mod