I ran it up to 9K and it looks like the peaks (HP & Torque) came
at around 8,700.
So, IMO, 9K is safe and your best bet.
Watching the stock VTR on the dyno was quite an experience...
So torquey it hit 9K in just a few seconds -- and so quiet too!
Very different from when I was dynoing my 'Bird. That bike
literally screamed -- almost sounded painful, ha ha

TJ

Life has a 100% mortality rate, and there ain't no cure.. LIVE IT UP! ... and yes, I'm 100% red blooded American infidel!