Mine has been 8s with just an exhaust, tune, and sitting at 6.5" over. Mine is a stock motor and no spray and the rider weighed around 165-170 suited. I'm not sure it's possible to run an 8 being stock wheelbase but maybe a +4" and it would be close depending on your weight and your rider skill
2008 Hayabusa with Brock's Performance Alien Head Exhaust sets world record for first stock bike into the 8's using all bolt-on parts. Stock wheelbase, foot shifting, Power Commander PC3usb, Brock's Ultra Mod, lowered, re-geared, VP MR9 race fuel - no nitrous or turbo. Richard Gadson riding at Gainesville, FL during AMA Prostar Finals in 2008.
6.12 in a perfect world is 9.67 that's a long way from a low 9?With an airshifter, It will shift when activating a button, normally the horn, and you can foot shift it will riding around on the street.
I foot shift mine, haven't been to a 1/4 mile track with it, just the 1/8 mile and ran 6.12@119mph which is a low 9 second 1/4. Here is what my bike looks like. It's a 2012 with a full Tiforce exhaust and ECU tuned, no power commander. And I weigh right at 200lbs unsuited