Who knows what kind of 99-07 busa 4-into-1 aftermarket headers these are?

[Black Sheep]

Just picked this up from a local shop here in Atlanta. Are they Hindle or Yoshimura? ??? I can make out a Serial Number of some kind, blurry in that last photo.

 

[Fastfrog007]

Id say Yosh

 

[3gturbo]

+1 on yosh..looks like my old 4-2-1 yosh setup

 

[MikeSomething]

 

[Dr E]

Those are Yosh springs for sure!

 

[blackfalcon]

its a yoshimura header i have one and look exactly like this and yes the spings are also yoshi ones...