I haven't seen it. I just read from users that it was there. It may or may not be the same as the earlier header from H.
Anyway. If there is some length inside the header that continues the same port exit diameter for some length, that would be a good thing for tq.
I thought hard about this, and I remember noticing that the starting of the new header pipe's ID? did match the exit diameter of the port, before I installed it.
No, no!! This is a Royal Enfield we're talking about. Your contribution to the greater good is to keep installing stuff until it doesn't work any more. Every RE owner knows this.
This is the exhaust valve of my bike, after 40.000 kilometer.
Seems like yours is running good also. Does your commute involve a lot of start/stops, short trips?