That's completely the wrong sprocket for the bike. Even a stock size will not fit the FZ6R.
Check this one out:
Driven 520 Steel Rear Sprocket for FZ6R 09-13 - SoloMotoParts.com
Not defending her, but same thing happened to me a while back and I tried analyzing what I did wrong and how to prevent it from happening again.
I realized that our bikes get completely hidden by the B-pillar of cars so it's possible she checked her blind spot and mirrors and actually didn't...
Look into the Race Tech springs that are matched to your weight. You can also add their cartridge emulators for increased adjustability.
The stock springs are progressive and you go through the first little bit of travel really quick!
Hi Everyone,
As you probably know, I've sold my FZ6R and am selling the parts that remain.
Parts are located in Toronto, Canada.
PM me with what you're interested in and your zip/postal code and I'll get you a shipping quote. For more expensive/multiple items, we can work something out for...
Thanks everyone for your suggestions. I'm in no rush to sell and I'm sure there's someone out there looking for exactly this (maybe they have a broken capsule).
Having said that, all prices are Best Offer so feel free to send me a PM with an offer if you're interested.