Super Jet B-Pipe vs Coffman (Informative Pics)

[Spx-97]

Hey I took a pic of my B-pipe and a Coffman that I pulled off my 650. Pretty similar design except the coffman isn't tunable. Exhaust manifold is almost the same. Can someone tell me if this is a Coffman Sizzler? This came off an old Group k 650 build.

 

[TheBuzzard]

sizzler

 

[Spx-97]

I threw a 650sx pipe next to them as well.