Pipe ID anyone?

[GMC]

Yes that's Christians bike.
The G5 125 makes a lot of sense as the pipe was quite short and wasn’t really suitable for the Husky.

[JC]

G5 & G4 both 100's not 125.  I'd have tho't w a 2" header it wouldn't be for a 100.

[GMC]

I'd have tho't w a 2" header it wouldn't be for a 100.

I thought the same thing but it was a short pipe with a very short header so it would have been a wild pipe for a 250 / open